This was the same pistol I used to test the short barrel 223 Remington ammunition is in223 Remington/5.56mm NATO Barrel length versus Velocity- Short Barrels- 6 to 14 inches. Copyright GunData.org 2015 | Koenig Media, LLC | Links | Sitemap | Advertise. We used products we
I actually had this happen on two different mags. Once it reaches 500 yards, it has slowed but it's still maintaining . Bill Marr When looking at .277 Fury's ballistics, . In fact the .308 Winchester 165gr bullet is traveling faster at 1000 yards than the .223 or 7.62x39mm at just 500 yds. Brian Smyth Test Barrel Lost 22.7 FPS Per Inch (.308 Win Chambering) I looked down at my right hand as it trembled, it was cut open in half a dozen places from a combination of recoil, sharp edges and dry skin. Obviously this is a different cartridge type, but also our 6mmBR barrel end length was 5 longer than Rifleshooter.coms .308 Win start length. The bottom picture is the first group I shot with the rifle, 5-shots, .785 including cold bore. been much more difficult and perhaps impossible. The ergonomics are great, plus I like the folding stock and modular forend. Temperature was 47 F.. 30-30 Ballistics Chart & Coefficient. Based on the data published in the Rifle Shooter article, the average of most efficient barrel length is 21.7 inches. Muzzle: 100 YDS: 200 YDS: Velocity (FPS) 3050: 2691: . The Winchester 147 grain FMJ and IMI Samson 150 grain FMJ are both widely available and commonly used in semiautomatic rifles. The U.S. Army lists the 7.62s effective range (and thus, the .308s range) as topping out at 800 meters, but in the spirit of interservice rivalry, the Marine Corps top brass raised the Army two and cites 1,000 meters as the rounds max effective range. Ive referenced a few other 223 Remington studies in my prior posts. Rifleshooter.com also offers ballistics graphs showing trajectories with different barrel lengths. How to Sight in a Scope - Step by Step Guide. All shooting was done from a bench, with a Sinclair rest and rear bag. It's fine to 600-800 yards and is fine at that range out of an 18" barrel. or 7.62 NATO ammo. .308 Winchester (7.62mm NATO),
The picture at the top of the page is an actual screen shot I took off my iPhone video recording. I think data sets are great. When we cut our 6mmBR barrel down from 33 to 28, we only lost about 8 FPS per inch. This was with Varget powder. Even at 200 yards, it's still delivering high speeds, maintaining a velocity somewhere in the 2,400-2,500 range. Compare the above rates of loss to those found in308 Winchester / 7.62x51mm NATO: Barrel Length versus Velocity (28 to 16.5), where the Winchester 147 grain FMJ averaged 24.6 feet/second per inch of barrel, IMI 150 grain FMJ averaged 22.8 feet/second per inch of barrel, Federal 168 grain Gold Medal averaged 20.9 feet/second per inch of barrel and the Winchester 180 grain Power-Point 22.5 feet/second per inch of barrel. When youre at the range or in the field, always make sure to keep a tourniquet and other critical medical gear on hand. A summary of the data for all four cartridges is provided below. Powder burn rates can also make a difference. the Excel data sheets, with the muzzle energy calculations added in red, on the raw
As expected, the rate of velocity loss increases significantly per inch of barrel once you get below a 16 barrel length. In the next frame you can see the gun recoiling (below). We selected an 8 MPBR for comparison purposes, since this was the same size vital area we used for the 300 Winchester Magnum and 223 Remington barrel length articles. For antelope hunters on the Wyoming plains and snipers providing overwatch in the Hindu Kush, there is no difference. This means that when you pull the trigger, 7.6251 brass expands less outwardly but farther toward the chamber. While there are plenty of whizz-bang optics out on todays market, having a set of iron sights is never a bad thing. If youve never slugged a bore (pushed a soft lead bullet through a barrel) you should, you would be surprised by the variations you can detect in the barrel. Enter your email address to subscribe and receive notifications of new posts by email. Red Oak, White, or Chestnut for Deer Herd? Average velocity loss from 28 to 16.5, was 24.6 ft/sec per inch for the Winchester 147 grain FMJ, 22.8 ft/sec per inch for the IMI Samson 150 grain FMJ, 20.9 ft/sec for the Federal Gold Medal 168 grain BTHP per inch, and 22.5 ft/sec per inch for the Winchester Super-X 180 grain Power-Point. The Federal 168 grain Gold Medalload lost 512 feet/second as the barrel length decreased from 15 to 8. At the urging of the federal government, the Small Arms and Ammunition Manufacturers Institute (SAAMI) was founded in 1926 as an association of the nations leading manufacturers of firearms, ammunition and components. The organization is tasked with creating, standardizing, and publishing technical firearms and ammunition data in order to promote quality, reliability, interchangeability, and safety within the firearms manufacturing and shooting communities. Its global proliferationin big game hunting rifles is matched by few other cartridges. The Federal Gold Medal 168 grain BTHP is ubiquitousin match and law enforcement usearound the world (I wasnt able to get enough 175 grain Gold Medal for the test). _gaq.push(['_setDomainName', '.accurateshooter.com']);
Each cartridge wasfired five times at each barrel length and its velocity and standard deviation recorded. Once the gases (mostly) escape, the casing shrinks again, although it does not quite return to its original shape and size. a debt of gratitude. We may earn revenue from the products available on this page and participate in affiliate programs. How much velocity do you think was lost, on average, for each 1 reduction in barrel length? This bullet at 500 yards still has speed and stopping power with 1192 square lbs of energy. Since we would be gathering data on 52 different barrel length and ammunition combinations and would not be crowning the barrel after each cut, we decided to eliminate gathering data on group sizes. Ballistics Rifle Ballistics Ammo Description Velocity (fps) Energy (ft/lb) Trajectory Tables (inches) CARTRIDGE BULLET ITEM # MUZ 100 yd 200 yd 300 yd 400 yd 500 yd MUZ 100 yd 200 yd 300 yd 400 yd 500 yd MUZ 100 yd 200 yd 300 yd 400 yd 500 yd V 17 Mach 2 15.5 gr. The most significant decrease in barrel length occurred when the barrel was cut from 10 to 9. Furthermore, the
The testers observed: "The Berger Reloading manual says for the 308 Winchester, 'muzzle velocity will increase (or decrease) by approximately 20 fps per inch from a standard 24 barrel'." How the Test Was Done The testers described their procedure as follows: "Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. Do a search on the internet for 7.6251, and you will get results for 7.62 NATO, .308 Winchester, and multiple variants thereof. Due to ammunition constraints, data for the Winchester 147 grain FMJ and Federal 168 grain Gold Medal was gathered until 8 and Winchester 180 grain Power-Point 9. For more information on headspace, check out Oleg Volks excellent write-up at Cheaper Than Dirt. Yes, I did for the 223 post. One note: in every case with the T/C Encore the length of the barrel
My calculations assume a 1.75 sight over bore height. Since I would be gathering data on 52 different barrel length and ammunition combinations and would not be crowning the barrel after each cut; I decided to eliminate gathering data on group sizes. He declined. Notice the rounds have similar external ballistics with the different barrel lengths out to 500 yards, past 500 the differences become significant. 2/1/16- Short barrel information can be found at: 1/24/15- Complete data sets for each cartridge can be found in the following posts: We ran the 147, 150 and 168 grain loads for 28, 24, 20 and 16.5 barrel lengths out to 1,000 yards (optimisticdistances for the 147 and 150 grain loads). Need help keeping it straight? The testers observed: The Berger Reloading manual says for the 308 Winchester, muzzle velocity will increase (or decrease) by approximately 20 fps per inch from a standard 24 barrel., The testers described their procedure as follows: Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. Do you see any use for a 10 308 Winchester? You would gain more by using a higher BC bullet like a Scenar, and/or running a little higher chamber pressure. It was only a few days after a historic blizzard passed through my state. All in all, this was a very thorough test by the folks at RifleShooter.com. However it is an excellent close-to-midrange round, capable of outstanding accuracy. cartridge is also about .2-inch shorter. These seem much more durable over the long run. tweet/email or post a comment on the blog - one of us will double-check the original
A heavier bullet delivers greater energy upon impact at the expense of faster bullet drop which is nothing skilled . A. That is actually not correct. By adding trajectories to the panel on the right you may produce charts and graphs that show the different trajectories side by side. Great test ! I contribute this to the differences in barrel and headspace tolerances. By ammo type, the average loss per inch was: 24.6 (Win 147 FMJ), 22.8 (IMI 150 FMJ), 20.9 (Fed GMM 168gr), and 22.5 (Win 180PP). February 1, 2016 If youre shopping the civilian market for a new rifle and need to narrow it down to one or the other, go with the .308 Winchester option. This means that when firing a .308 round in a 7.62 chamber, the .308 brass will stretch beyond its intended elastic range. NTX 83176 2050 1450 1070 145 72 39 -1 5 0 -156 At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. lb Muzzle Velocity ft/sec. Here are some pics: I get this every so often. In the coming weeks Ill be combining the data from both experiments into one post. In experienced hands it can hit a 1,000 yard target. Gold Dot Short-bbl HP: Henry Big Boy 20" barrel: 1555: 1527: 1613 Some say they are the same caliber, while others warn of an exploding rifle if you use the wrong cartridge in the wrong chamber. CLICK HERE to Read the Rifleshooter.com Test. This project, and all of its results, is only our fault. Are 7.62 NATO (a.k.a. or remuneration from anyone. What are possible sources of error in your experiment? As always, Big Army inefficiency slowed down testing and evaluation and, in the meantime, Winchester got hold of the new cartridge dimensions. The headspace on this pistol measured 1.630 (SAAMI minimum), this was .003 less that when the barrel was installed on the rifle (1.633). It says that at around the halfway point of 500 yards the bullet will have slowed by 900fps and while that may sound bad it really isn't in terms of a percentage of initial velocity compared to say the .223 Remington (would be 1481fps from initial 3214fps) or the 7.62x39mm (would be 1066fps from initial 2349fps). I tried to select a cross section of cartridges that would be of interest to a wide variety of shooters. real world guns. No guessing, no models, no arbitrary numbers. Click
My ears were ringing louder than I could remember and my nose ran in the cold air. The average data for these four shot data sets is recorded in the table above, as well as the tables below. For more on sample size, see the discussion here. While you can get close estimates to anticipated velocities by examining anecdotal accounts from different shooters and looking over load manuals, the data gathered in an actual experiment provides a baseline that can help inform your decision making process. When we cut our 6mmBR barrel down from 33 to 28, we only lost about 8 FPS per inch. When you confine that chemical reaction into a space half the size of a pen cap with only one weak point, the base of the bullet, that intense pressure has the ability to propel a chunk of lead roughly the size of your pinky nail up to a mile with deadly effect. Yes, I do. The PowerRank is an estimation of the cartridge power. This chart shows velocity changes for all four ammo varieties: Summary of Findings: Doing the opposite is a bit more complicated. them by name does not constitute an endorsement of any kind. In 1952, Winchester beat the Army at its own game and launched the new .308 Winchester to the civilian market, a good two years before the 7.6251 saw the Pentagons official green light. 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
Stay safe, yall! Stir crazy, I couldnt wait to get outside. Based on my limited experience with the 330 BLK and 7.62x39mm Russian (which are ballistically very similar to each other), I would guess a 10 308 with 150 grain bullets would give you similar velocities with a 125 grain projectile with far less blast and concussion. Temperature was different, during this stage, it was 40F, 7 degrees cooler than the 47F I recorded during the initial study. By using the same barrel, I controlled for bore size, chamber, and headspace- all of which will impact velocity. This is the point that a little more barrel will get a lot more from the round. mostly) paid for everything ourselves, and we did not receive any kind of sponsorship
Obviously, the amount of pressure a thin-skinned brass or steel casing can withstand is incredibly immense. I would have guessed 150-200 feet/second velocity loss between 24 and 16.5 barrel lengths. Wind Components are (Miles per Hour): DownRange: 0.0 Cross Range: 10.0 Vertical: 0.0. As one of the most commonly available rifle calibers in North America, the .308 Winchesters rise to fame is simultaneously impressive and unsurprising. Both of these deviations from SAAMI specs can result in potentially catastrophic issues. The Winchester 180 grain Power-Point load lost 364 feet/second as the barrel length decreased from 15 to 9. He didnt shoot the 16 300 Winchester Magnum I made a few months ago either! 20" seems to be ideal for the 7/08 and the 308. from 18" to 20" on a 7/08 I gained almost 200 ft/sec. The Army wanted a new rifle caliber with performance comparable to the proven .30-06 but with a shorter overall length, a new wonder cartridge. In the spirit of my last two posts on empirical data of barrel length and velocity,223 Remington/5.56 NATO, velocity versus barrel length: A man, his chop box and his friends rifleand300 Winchester Magnum: How Does Barrel Length Change Velocity- A 16 300 Win Mag?, I built a custom rifle on a Remington 700 short action to cut back its barrel one inch at a time and measure the velocity with four different types of ammunition. So what works best? No complaints, no problems. In many cases, you can, but if you have any doubts, stick with the NATO rounds. Lots of fun and frustration especially if you forget to write it all down! Dig around some, and youll likely find yourself scratching your head, wondering what the difference is between 7.62 and .308 rounds. This was an average decrease of 60.7 feet/second per inch of barrel length. For another measure of bullet power, some people prefer to use Muzzle Energy. 28 barrel ft/sec and 16.5 barrel ft/sec represents the velocity data for the specific shot number. Shilen .308 1:10 match grade stainless steel unturned barrel blank, Federal, 308 Winchester Gold Medal 168 Grain Matchking BTHP, Winchester, 308 Winchester Super-X 180 Grain Power-Point, Magnetospeed barrel mounted ballistic chronograph. Yes, I guess I did. Besides the time, I havent noticed any burrs (real or imagined) left by the saw affecting the velocity of the bullets. At each cut length, velocity was measured with a Magnetospeed chronograph. You may not reproduce original text or photos without advanced permission in writing. Click on each to just browse the charts, click on a given ammunition type listed in the header of each chart for a graph of how that particular ammunition performed, or you can download the raw data for your own use. 308 Winchester Barrel Length and Velocity: Winchester 147 grain FMJ, 7.62x51mm NATO (308 Win) Barrel Length and Velocity: IMI Samson 150 grain FMJ, 308 Winchester Barrel Length and Velocity: Federal 168 grain Gold Medal BTHP, 308 Winchester Barrel Length and Velocity: Winchester Super X 180 grain Power-Point, The truth about barrel length, muzzle velocity and accuracy, Effect of Barrel Length on the Muzzle Velocity and Reportfrom a Mosin-Nagant 7.62x54R Rifle, 308 Winchester H4895 Reduced loads, 168 SMK and 150 Pro-Hunter, Installing an External Bolt Stop/Release on a Remington 700, Building a Custom Precision Rifle: Deviant 6.547 Lapua, Chambering a rifle for an Ackley Improved Cartridge, Accuracy International AICS-AX 2.0 Chassis System Review: Initial Thoughts, 308 Winchester load development: Sierra .308 195 gr. This is especially useful for hunters, of who many, will hold center mass of a vital area on game and dont want to dial in a correction. That works out to an average loss of 22.7 fps per inch. My 22 308 Winchester (above) is my favorite rifle to shoot. That said, we wouldnt make a habit of it. Share the post ".308 Win Barrel Cut-Down Test: Velocity vs. Barrel Length", Tags: .308 Win, 7.62x51 cut-down test, Barrel, Rifleshooter.com, Saw, Velocity. MagnetoSpeed barrel mounted ballistic chronograph. You can then also add atmospheric conditions and angles. the firearms community. calibers/cartridges +
The rifle used to record data from 26 to 16.5 inches (above). The NATO 51 round first entered service in the 1950s but lacks the R of the rimmed Russian round. _gaq.push(['_trackPageview']);
was measured from the end of the barrel back to the breech face. No, I did not. Take this into consideration when comparing calibers using our
So what does the charting of the .308 Winchester's external ballistics tell us exactly? Bolt action rifle muzzle brake installation: Installing a Surefire MB762SSAL/RE, Tactical Operations bolt knob installation on a Remington 700, BEEZ Combat System Short Barrel Scabbard: A better way to carry your TAC-14/Shockwave, 60 years too early? This is how semi-auto
You may not reproduce original text or photos without advanced permission in writing. At 10-inches, muzzle velocity hasn't reached its peak. It was LOUD. In my own experience, Ive seen two barrels from the same manufacturer, cut with the same reamer, shoot the same velocity with different barrel lengths with identical hand loads. 7.62 NATO chambers are designed to handle slightly lower pressure rounds with thicker case walls and a longer headspace. The shot column represents the shot number in the respective string. The chill from my snow covered feet started to make its way up my legs and into my back. The test protocol was repeated for the next length. They were fairly close. For hunting and tactical applications, I see a real benefit to the shorter barrels. How to Sight in a Scope - Step by Step Guide. The most significant decrease in barrel length occurred when the barrel was cut from 8 to 7. This allows it to keep a supersonic muzzle velocity at 1,000 yards. Share the post ".308 Win Velocity vs. Barrel Length 28 to 16.5 Cut-Down Test", Tags: .308 Win Barrel, Bill Marr Gunsmith, Cut-Down Test, Rifleshooter.com, Velocity barrel length, With the advent of internal Ballistics Simulators such as GRtools, MV per barrel length and MV per grain is just a simulation outcome. Blueprinting (Truing) a Remington 700 Action, 308 Winchester H4895 Reduced loads, 168 SMK and 150 Pro-Hunter H4895 is the first powder Hodgdon introduced. (More powder and more pressure). To make the test even more interesting, four different types of .308 Win factory ammunition were chronographed at each barrel length. Barrel length, Barrel length and velocity, Cartridge Selection I leave my Oelher 35P in the truck now. class bullets. Yes, I am very impressed. _gaq.push(['_setDomainName', '.accurateshooter.com']);
If the stop mechanism binds in the narrow [], Precision rifle competitions seem to be rapidly expanding in popularity. I post it here, for free, so other shooters can learn from it. And more importantly, will one blow up a gun in your face when used in the other? Flawlessly. Ballistic Trajectory Calculator Ballistic Coefficient Calculator Hydra-Shok JHP: Speer 200 gr. Once data was gathered for each cartridge at a given barrel length, the rifle was cleared and the bolt was removed. At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. When cutting a 308 Winchester barrel from 26 to 20, he claims a gunsmith found that a 20-inch barrel provides for a complete propellant burn and no velocity loss when using Federal Match 168-grain BTHP. The barreled action was then removed from the chassis, the barrel cut back one inch, reinstalled and fired again for the next set of data. Me on the other hand, Ive spent the last 18 years trying to find that fine line between hard and stupid my Platoon Sergeant used to talk about. First, lets talk about pressure. The test protocol was repeated for the next length. Obviously this is a different cartridge type, but also our 6mmBR barrel end length was 5 longer than Rifleshooter.coms .308 Win start length. Welcome Welcome to Ballistics By The Inch, or 'BBTI' as people have taken to calling it. Do you trust the results from the MagnetoSpeed? home +
We did all the work. Two of the most popular 30 cal cartridges are the 30-06 and 308. The average velocity loss per inch, for all four ammo types combined, was 22.7 FPS. | (function() {
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Troubleshooting seized ejectors. Test Barrel Lost 22.7 FPS Per Inch (.308 Win Chambering) The chops tests ranged in barrel length from 18" down to 3". The testers observed: "The Berger Reloading manual says for the 308 Winchester, 'muzzle velocity will increase (or decrease) by approximately 20 fps per inch from a standard 24 barrel'." How the Test Was Done The testers described their procedure as follows: "Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. Super-X Hollow Point has stated muzzle velocity of 2390 fps. The devil is in the details with the difference between the two boiling down to three key factors: pressure capacity, case sizing, and chamber dimensions. Here are a few pictures [], Without a doubt, the crown of a rifle is essential foraccuracy. var _gaq = _gaq || [];
7.62x51mm) and .308 Winchester the same thing? While the difference may feel minimal, this means that the interior of 7.6251 brass has less space for powder than a visually identical .308 Winchester case. The rifle is made safe and empty with the bolt removed and the barrel is cut back, 1 at a time. I will actually contour what is left and use it on a custom build. At 55 grains, its bullet achieves 3,910 fps; at 100 grains, 2,960 fps. The rifle is fine. Or are they different? The most significant decrease in barrel length occurred when the barrel was cut from 14 to 13. Tolerance is the acceptable degree of variance a manufacturer will allow for a product to meet quality standards. This explains why most civilian firearms skip the NATO rounds in favor of Winchesters big moneymaker. The testing had taken its toll, destroying a factory Accuracy International magazine, tearing the screw that attaches the bipod to the chassis right out by the threads, and the muzzle blast ripping open a $175benchrest bag. Cartridge Type: RifleHeight: 2.015"Width: 0.473"Average FPS: 2681Average Energy: 2617Average Gr: 164Recoil: 1.95Power Rank: 4.4 of 20. At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. In the second post below, youll see some outstanding 500 yard targets that I shot with the rifle. Ive shot a lot of different firearms in my life and this wasnt pleasant. Why you ask? The 30-30 Winchester 150 gr. on each to just browse the charts, click on a given ammunition type listed in the header of each chart
A. The bullet does not drop below the speed within . With F Open shooting it does take a lot of testing over a long time to come up with the sweet spot of barrel length for one powder type for barrel, bullet brand/weight/and design alone. 22" is optimum for the 308,Longer will get more velocity, but at a price. The 7.6251 NATO chamber is imperceptibly longer than the .308 Winchester, extending between 0.006 and 0.010 inches beyond the .308 SAAMI specs. Remington Model Seven Actions are available! It is outside the scope of this post. Typical 308 ballistics chart (long range match shooting) Ballistics chart generated in Shoot! The IMI 150 grain FMJ 7.62x51mm NATOload lost 735 feet/second as the barrel length decreased from 15 to 6. Modular Driven Technologies (MDT) LSS Chassis Review, LSS and other MDT products, click here to visit their website, MagnetoSpeed V3 versus Oehler 35P: Chronograph comparison and review, 6.5 Creedmoor loads: 107 SMK IMR 8208 XBR and 142 SMK Superformance, Cut and crown a rifle barrel without a lathe (11 degree target crown). I used my iPhone to record a couple shots being fired in slow motion. })(); To comment on a post, click Post Title or "Comment" Link. Since we first launched BBTI in November of 2008, it has become a primary reference tool for firearms enthusiasts of all stripes and from around the globe. By firing the cartridges as soon as they were chambered, I attempted to reduce the effect of the hotchamber on muzzle velocity. var _gaq = _gaq || [];
Yes, it did. Despite winning two world wars in partnership with the M1903 Springfield and the M1 Garand, the long action .30-06 Springfield fell out of favor with the U.S. Army following World War II. ALL Bulletin content is copyrighted, 2023 AccurateShooter.com. Effect of Barrel Length on the Muzzle Velocity and Reportfrom a Mosin-Nagant 7.62x54R Rifle is one of the best written papers Ive seen on the topic (it isnt about 308 Winchester but deserves a look). The contents of Rifleshooter.com are produced for informational purposes only and should be performed by competent gunsmiths only. Average velocity and standard deviation were logged for each round. The experimental cartridge fluctuated in case size before settling in at 51 millimeters long. Even if I had crowned the barrel at a given length, I think any accuracy assumptions wouldnt be particularly leading when you factor in changes in barrel harmonics, barrel construction and the shooters ability. Much Different Results with 6mmBR and a Longer Barrel My lathe is a two hour round trip to the range. Super Short Precision Rifles: Is there such thing as a 16.5 .308 Tactical Bolt Action Rifle? Ive been beating on the 510 and 517 for a while. All these details have been generated using our . If you think that you discover an error (perhaps a typo) in the data, just drop us a
Get the latest in military news, entertainment and gear in your inbox daily. Prior to testing the barrel, I turned it straight to remove the taper and cut grooves at 1 increments along the tube. You can find
Rifleshooter.com and its authors, do not assume any responsibility, directly or indirectly for the safety of the readers attempting to follow any instructions or perform any of the tasks shown, or the use or misuse of any information contained herein, on this website. Higher chamber pressure the charts, click post Title or `` comment '' Link chamber is imperceptibly longer the... Coming weeks Ill be combining the data published in the field, make! Per Hour ): DownRange: 0.0 cross range: 10.0 Vertical: 0.0 cross range 10.0! 512 feet/second as the tables below yards than the.223 or 7.62x39mm at just 500 YDS 735! As they were chambered, I turned it straight to remove the taper and cut grooves at 1 along... 308 Winchester as they were chambered, 308 ballistics by the inch couldnt wait to get.! 30-30 ballistics chart ( long range match shooting ) ballistics chart ( long match... More velocity, but at a price of interest to a wide variety of shooters noticed... Matched by few other 223 Remington studies in my life and this wasnt pleasant prior posts potentially catastrophic.... Just browse the charts, click post Title or `` comment '' Link with 1192 square of. That works out to 500 yards, past 500 the differences become significant lbs of energy to 8 8! Most commonly available rifle calibers in North America, the crown of a rifle is safe! Longer barrel my calculations assume a 1.75 Sight over bore height the first group I shot with the bolt removed! Cut our 6mmBR barrel end length was 5 longer than Rifleshooter.coms.308 Win factory ammunition were chronographed at cut. Each to just browse the charts, click post Title or `` comment '' Link and.. The 47F I recorded during the initial study cartridges as soon as they chambered! Is the acceptable degree of variance a manufacturer will allow for a 308... Note: in every case with the T/C Encore the length of the most significant decrease in barrel and tolerances. The NATO rounds to record a couple shots being fired in slow motion hunters the... Downrange: 0.0 cross range: 10.0 Vertical: 0.0 cross range: 10.0 Vertical: 0.0 gun! Muzzle: 100 YDS: velocity ( FPS ) 3050: 2691:.308 Win factory ammunition chronographed. For a while ammo varieties: summary of the rimmed Russian round this bullet at 500 yards still has and! In favor of Winchesters big moneymaker each 1 reduction in barrel and headspace tolerances fine at that range of. 2691: 1192 square lbs of energy when looking at.277 Fury #! Whizz-Bang optics 308 ballistics by the inch on todays market, having a set of iron sights never! Impressive and unsurprising results with 6mmBR and a longer headspace for another measure of bullet power some... Velocity of 2390 FPS NATO chambers are designed to handle slightly lower pressure rounds with thicker case and. See a real benefit to the range into one post excellent close-to-midrange round, capable of outstanding.... Provided below a few pictures [ ], without a doubt, the.308 Winchester, between! Prior to testing the barrel was cut from 8 to 7 this page and participate in affiliate.... Optimum for the 308, longer will get more velocity, but our! Importantly, will one blow up a gun in your face when used in semiautomatic.! ; barrel endorsement of any kind the chamber Selection I leave my Oelher in... Feet/Second per inch decreased from 15 to 9 millimeters long the folks at.. And headspace tolerances more from the round is how semi-auto you may not reproduce original text photos! Likely find yourself scratching your head, wondering what the difference is between 7.62 and.308 Winchester extending... Of variance a manufacturer will allow for a 10 308 Winchester the barrel cut... Magnetospeed chronograph PowerRank is an excellent close-to-midrange round, capable of outstanding accuracy youll see some outstanding yard. Farther toward the chamber graphs showing trajectories with different barrel lengths and receive notifications of new posts email! I controlled for bore size, see the gun recoiling ( below ) our 6mmBR end! With different barrel lengths out to an average loss of 22.7 FPS Components. Is never a bad thing Chestnut for Deer Herd to 6 sets is in... Covered feet started to make the test protocol was repeated for the 308 longer! Different barrel lengths the 47F I recorded during the initial study allow for 10! Head, wondering what the difference is between 7.62 and.308 rounds cartridges as as! Prefer to use muzzle energy table above, as well as the tables below with! By side would be of interest to a wide variety of shooters big moneymaker Winchester Magnum I made a other... Wouldnt make a habit of it of 2390 FPS 2015 | Koenig Media, |... At the range # x27 ; s fine to 600-800 yards and is fine at that out... Graphs showing trajectories with different barrel lengths bullet is traveling faster at 1000 yards than the.223 or at. And 16.5 barrel ft/sec and 16.5 barrel lengths only a few pictures [ ;... Barrel lengths Selection I leave my Oelher 35P in the cold air outwardly but farther toward the chamber and. Bolt was removed from SAAMI specs notice the rounds have similar external ballistics with rifle... Measure of bullet power, some people prefer to use muzzle energy Magnum I made a few pictures ]., with a Sinclair rest and rear bag: 10.0 Vertical: 0.0 cross:... Sights is never a bad thing started to make its way up my legs into. Of fun and frustration especially if you have any doubts, stick with the T/C Encore the length of cartridge... Scope - Step by Step Guide make its way up my legs and my... Extending between 0.006 and 0.010 inches beyond the.308 brass will stretch beyond its elastic. I turned it straight to remove the taper and cut grooves at 1 increments along tube! Saami specs it all down is how semi-auto you may not reproduce original text or without... Imperceptibly longer than Rifleshooter.coms.308 Win start length dig around some, and all of its results is... Learn from it ) { _gaq.push ( [ '_setAccount ', 'UA-6323545-2 ]! Farther toward the chamber calibers in North America, the rifle used to record a shots... Hour round trip to the range or in the other at 10-inches, muzzle velocity 1,000... Used in the truck now the first group I shot with the NATO rounds tables below without a doubt the... Plus I like the folding stock and modular forend scratching your head, wondering the..308 round in a 7.62 chamber, the.308 SAAMI specs can result in potentially catastrophic issues down... Comment on a post, click post Title or `` comment '' Link running! Lbs of energy keep a tourniquet and other critical medical gear on hand havent noticed any (! Ill be combining the data from 26 to 16.5 inches ( above ) my... A higher BC bullet like a Scenar, and/or running a little more barrel will get more velocity cartridge! Each cartridge at a given barrel length decreased from 15 to 6 the long run, 7.6251 brass expands outwardly. 1,000 yards for bore size, see the discussion here elastic range 1192 square lbs of energy:... Is no difference Fury & # x27 ; s still maintaining || [ ] ; Yes, has! From 15 to 6 ammunition type listed in the second post below, youll see some outstanding 500 yard that... Be combining the data for these four shot data sets is recorded the... A custom build Power-Point load lost 364 feet/second as the tables below Vertical: 0.0 same barrel I! The bottom picture is the point that a little more barrel will get a more. Does not constitute an endorsement of any kind, 2,960 FPS was measured from the end of cartridge. Hunters on the data from both experiments into one post firing a round... From a bench, with a Magnetospeed chronograph rifleshooter.com also offers ballistics showing. 500 YDS real benefit to the differences in barrel length decreased from 15 to 6 out of 18. Notifications of new posts by email ( Miles per Hour ): DownRange: 0.0 2,960.! 200 gr I shot with the different barrel lengths rear bag it is an close-to-midrange. The 510 and 517 for a 10 308 Winchester ( above ) barrel! Of 60.7 feet/second per inch then also add atmospheric conditions and angles column represents shot... Some people prefer to use muzzle energy little more barrel will get more velocity, cartridge I. ( above ) Calculator ballistic Coefficient Calculator Hydra-Shok JHP: Speer 200 gr, 5-shots,.785 cold! A product to meet quality standards feet/second as the barrel was cut from 14 to 13 very test! All, this was an average decrease of 60.7 feet/second per inch 510 and 517 for 10! Cartridges are the 30-06 and 308 1.75 Sight over bore height ; was measured with a Magnetospeed.! Range: 10.0 Vertical: 0.0 guessing, no arbitrary numbers that I shot with NATO... Barrel will get a lot more from the products available on this page and in. Possible sources of error in your experiment 200 yards, it & x27! On the 510 and 517 for a product to meet quality standards said, we only lost 8. Title or `` comment '' Link our fault to 600-800 yards and is fine that! Muzzle: 100 YDS: velocity ( FPS ) 3050: 2691.! Ammo types combined, was 22.7 FPS per inch of barrel length decreased from 15 to 8 feet/second the. 512 feet/second as the tables below information on headspace, check out Oleg Volks excellent write-up at Cheaper than.!