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 headspace on this pistol measured 1.630 (SAAMI minimum), this was .003 less that when the barrel was installed on the rifle (1.633). 7.62x51mm) and .308 Winchester the same thing? var _gaq = _gaq || [];
Interestingly, these numbers jive pretty well with estimates found in reloading manuals. The shot column represents the shot number in the respective string. Do a search on the internet for 7.6251, and you will get results for 7.62 NATO, .308 Winchester, and multiple variants thereof. Do a search for .308 and you will find similar results, albeit with fewer references to 7.62. This weight is more appropriate for whitetail deer and other small-medium sized game. I think cutting the same barrel is preferable over comparing different barrels of different lengths. The .327 Fed. Published Mar 29, 2021 12:55 PM EDT. In 1957, NATO also adopted the new American cartridge, earning it the alternate designation 7.62 NATO. That same year, U.S. troops got their hands on the newly-adopted M14, the first American battle rifle chambered in 7.62x51mm. UPDATE 12/30/14: I tapered the barrel and installed a brake. Muzzle flash with the IMI Samson 150 grain FMJ was noticeably worsefrom 18 and below. Lots of fun and frustration especially if you forget to write it all down! A
We stopped at 500 yards, but I had some legit 2.5 500 yard 5 shot groups. 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). cartridge is also about .2-inch shorter. Looking for the perfect accessories to accompany your new .308 or 7.6251 rifle? I got the longest blank I could and went from there. Its global proliferationin big game hunting rifles is matched by few other cartridges. 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. Registration on or use of this site constitutes acceptance of our Terms of Service. DPX: Federal 240 gr. The Model Seven uses the same barrel dimensions as the 700, so unscrewing the barrel mounting it on the Model Seven (checking head space of course) provided me a serviceable pistol . Then, once you get home, secure your beautiful new Remington 700 or SCAR 17 in your gun safe. When the U.S. Army began developing the 7.62x51mm round, Winchester saw the writing on the wall and figured to cash in on what it hoped was the next official cartridge of the American infantryman, because when it comes to weapons technology, the military sells. })(); To comment on a post, click Post Title or "Comment" Link. Barrel length, Barrel length and velocity, Cartridge Selection A firearm with too much headspace will give cartridges some play within the chamber, while too little headspace will prevent the bolt from closing properly. With the .30 caliber bullet diameter being translated as 7.62 millimeters, the new 7.62x51mm cartridge was born. 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. The rifle used to record data from 26 to 16.5 inches (above). 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. The muzzle blast was so violent, it chopped open my Edgewood bag when it got too close. The answer may surprise you. The 308 is slightly more powerful and has a longer range. This includes detailed charts with inch-by-inch velocity numbers, multiple line charts, and complete data sets for each type of ammo. While the external dimensions of both 7.6251 and .308 cases look identical, there are virtually imperceptible differences which, when combined with the differences in the two different chamber dimensions, result in different headspacing for each caliber. The cartridge case (a.k.a. | 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). SDs and ES were superior from the longer barrel, as was the sight picture. Enter your email address to subscribe and receive notifications of new posts by email. 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). We also did do a sequence of tests out of the full length of the barrel blanks, just out of curiosity. Take this into consideration when comparing calibers using our
The gun and support equipment werent in much better shape. At 300 yards it has dropped around 13 inches, and at 500 yards it's just under 60 inches (5 feet). (More powder and more pressure). of this rather nutty project. The NATO 51 round first entered service in the 1950s but lacks the R of the rimmed Russian round. pistols are measured, but revolvers are measured as the length of the barrel in front of
The action had a 223 bolt face, so I opened it and installed a Sako extractor. or 7.62 NATO ammo. numbers. I think data sets are great. 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. Obviously, pressure, case wall thickness, and headspacing work together in such a way as to make the 7.6251 NATO and the .308 Winchester unique cartridges despite their very obvious similarities. 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. 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. This means that when you pull the trigger, 7.6251 brass expands less outwardly but farther toward the chamber. var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
This resulted in a velocity loss of 118 feet/second. 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. .32 Winchester Special, .308 Winchester (7.62mm NATO), .38-55 Winchester, .243 Winchester, .300 Remington Short Action Ultra Magnum, .25-35 Winchester, 7.82mm (.308) Lazzeroni Patriot, .260 Remington, .307 Winchester, 6.17mm (.243) Lazzeroni Spitfire, .356 Winchester, 6.71mm (.264) Lazzeroni Phantom, .30-30 Winchester, 7mm-08 Remington, 7mm Remington Short Action Ultra Magnum. Rifleshooter.com also offers ballistics graphs showing trajectories with different barrel lengths. In the good old days of Precision Shooting magazine (how we miss you! ammunition and other supplies, he was the brilliant gunsmith who worked with us to make
The results of those tests can be found on our blog. Stay safe, yall! Flawlessly. You can find
For firearms and ammunition, these differences are measured in PSI, fractions of an inch, and millimeters. CLICK HERE to Read the Rifleshooter.com Test. It was only a few days after a historic blizzard passed through my state. The cut off saw works better than the reciprocating saw and the hack saw, plus it feels more scientific. The Winchester 147 grain FMJ lost 10 ft/sec (5 ft/sec per inch) and the IMI Samson 150 grain FMJ lost 22 ft/sec (11 ft/sec per inch). Tight tolerances increase machine efficiency, while loose tolerances allow for more play in a part. 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. AVG change ft/sec per inch represents the average loss of velocity per inch based on the running averages. *Casing image above is an artist rendering and not a real photo of .308 Winchester (7.62mm NATO) Ballistics cartridge. You can then also add atmospheric conditions and angles. With tunning accuracy is 99.7%. I actually had this happen on two different mags. Readers have continually asked for data from shorter barrels, so here it is! .308 Winchester (7.62mm NATO),
I post it here, for free, so other shooters can learn from it. I will actually contour what is left and use it on a custom build. 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. Youd think I was disappointed, however, there was a smile on my face. For a more detailed chamber breakdown, check out this article by Bison Ballistics. It is too short to work with the TACMOD chassis forend, so now it is on the MDT LSS chassis. My ears were ringing for a long time after the test, I shot it wearing double ear protection and without overhead covered. The Federal 168 grain Gold Medalload lost 512 feet/second as the barrel length decreased from 15 to 8. Do you see any use for a 10 308 Winchester? them by name does not constitute an endorsement of any kind. Based on the data published in the Rifle Shooter article, the average of most efficient barrel length is 21.7 inches. The sample size of five rounds of each kind of ammunition per barrel length is a possible source of error. The bullet does not drop below the speed within . Average velocity and standard deviation were logged for each round. It's fine to 600-800 yards and is fine at that range out of an 18" barrel. 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. The chops tests ranged in barrel length from 18" down to 3". ATTENTION: Effective Sept 1, 2020, the BBTI Project is in "Archive Status." So while more reliable results will be obtained with a larger sample size, the data generated from a smaller sample is still of some use (provided it doesnt contain an outlier- which is why I dont know of anyone using data from single shots). Elasticity describes a materials ability to expand and contract, while plasticity refers to a materials ability to be stretched into a new shape without breaking (under reasonable amounts of stress). 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. over what ammo or caliber or gun is "best." JHP: Cor Bon 225 gr. The test protocol was repeated for the next length. Two of the most popular 30 cal cartridges are the 30-06 and 308. 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. The 308 Win's .308" bullet is commonly available in 150, 165, and 180 grain weights, which are substantial enough to make short work of a great variety of game. Like the 5.56 versus .223 comparison, understanding the differences between 7.6251 NATO and .308 Winchester is an exercise in patience that has the potential to save you and your wallet some pain and agony. There are plenty of good sources of information on this topic. At 1000 yards a .308 Winchester will have dropped around 400 inches (30 feet) where it has lost 55% of its velocity. Did it really hurt to shoot a short 308 pistol? Obviously, the amount of pressure a thin-skinned brass or steel casing can withstand is incredibly immense. No guessing, no models, no arbitrary numbers. Get the latest in military news, entertainment and gear in your inbox daily. According to multiple non-scientific studies, the average .308 case weighs in around 160 to 170 grains each, while 7.62 brass usually comes in at over 180 grains apiece. Tipped MatchKing (TMK) and VARGET, Mossberg 500: Cut, Crown and Choke Tube Installation, 6.5 Creedmoor load development: 16.5 inch barrel, 123 SMK and 140 SMK, Jewell trigger installation on Winchester 70/FN Special Police, Remington 700 Tactical .308 AAC-SD Review, Completing an 80% 10/22 Select Fire LLC RAZOR Semiautomatic Receiver, Scattergun Technologies Track-Lock II Ghost Ring Sight Installation on a Remington 870 Police Magnum, Removing a stuck pull-through cleaning kit, 308 WinchesterBarrel length in inches versus Muzzle velocity in feet-per-second (ft/sec), 308 Winchester Maximum Point Blank Range (MPBR) in yards for 8 Target. So what works best? Obviously this is a different cartridge type, but also our 6mmBR barrel end length was 5 longer than Rifleshooter.coms .308 Win start length. I bought a quart. You may not reproduce original text or photos without advanced permission in writing. He declined. The U.S. militarys 7.62 round is used for long-distance small arms engagements with light machine guns, sharpshooter rifles, and shorter-range sniper rifles. Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. Here are some pics: I get this every so often. The forearm was removed after the first string to allow access to the saw. Building something to cut up isnt the most rewarding experience; however, I plan on contouring and finishing the barrel to 16.25 (thats why I stopped at 16.5). Nearly every target shooter had his teeth cut on a 308 Winchester. Because of the arc of travel of the bullet you will hit dead center at 50 and 200 yards with a 50 yard zero. A. My 22 308 Winchester (above) is my favorite rifle to shoot. By ammo type, the average FPS loss per inch was: 24.6 (Win 147 FMJ), 22.8 (IMI 150 FMJ), 20.9 (Fed GMM 168gr), and 22.5 (Win 180PP). ), a debate was starting about the practical efficiency (and accuracy) of fast twist, short barrel (16 18 inch) 308 Win and 300 Win. 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. The velocity and standard deviation are recorded. I cant find the source document and data set (he does have some nice graphs), but it seems the author is trying show you dont need a long barrel for long range shooting. Thanks for the kinds words about the 308 and 300 Win barrel length posts. Although they share .30 caliber bullets, the 300 Blackout and 308 Win are dissimilar otherwise. I contribute this to the differences in barrel and headspace tolerances. The picture at the top of the page is an actual screen shot I took off my iPhone video recording. How you use the data is entirely
This calculator will produce a ballistic trajectory chart that shows the bullet drop, bullet energy, windage, and velocity. For a match or target rifle, longer and heavier barrels are easier to shoot; so I do not see a point in going short. var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
The barrel was cut off using a cold saw. The latter has nearly twice the propellant, and is therefore better able to fell very distant game. data for your own use. The barrel was cut off using a cold saw. 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
While most modern guns can handle both rounds safely, it never hurts to err on the side of caution. It will a produce a line graph showing the bullet drop and flight path of the bullet. Just ask Todd Hodnett. This resulted in a velocity loss of 137 feet/second. Yes, I am very impressed. Headspace is the distance between the base of a case and the portion of the case that locks the entire cartridge into place within the chamber. The locking portion of the case will vary depending on the caliber in question. When youre at the range or in the field, always make sure to keep a tourniquet and other critical medical gear on hand. All these details have been generated using our . The rifle is made safe and empty with the bolt removed and the barrel is cut back, 1 at a time. While the .308 Winchester is the civilian competitor and is frequently employed in hunting rifles and military replica firearms, such as the M14 (Springfield Armory M1A), AR-10/SR-25 (multiple civilian variants), and FN SCAR-H (SCAR 17). This creates a seal that prevents exhaust gases from exiting the firearm through any point except the barrel. Velocity Boundaries (Feet per Second) of: 1740 1460 1460 1460. Articles may contain affiliate links which enable us to share in the revenue of any purchases made. For instance, 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. However, the 308 Winchester is a short-action cartridge that has less recoil but is just as capable at normal hunting distances. _gaq.push(['_trackPageview']);
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. Often thought of as an [], Installing an External Bolt Stop/Release on a Remington 700 The factory bolt stop/release mechanism on Remington 700 rifles is sometimes considered a weak point in the design. Acknowledgements. rifle, you should be fine firing any modern commercial .308 Win. Since the 308 Winchesteris a popular hunting cartridge, I worked out the maximum point-blank range (MPBR, sometimes referred to as maximum point blank zero) for each barrel length with the given load assuming a 8 vital area. A. 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. Cartridge casings are most often made of brass due to its elasticity and plasticity. It includes gauges in .001 increments. No, I did not. A summary of the data for all four cartridges is provided below. (Yes, grains are an actual measurement of weight.). .357 SIG, .38 Super Auto Colt, .35 Whelen, .300 Remington Ultra Magnum, .35 Remington, .44 Smith & Wesson Special, .380 Auto (9mm Browning Short), 10mm Auto, .25 Winchester Super Short Magnum (WSSM), .303 British, 6.5x54 MS (6.5 Mannlicher-Schoenauer), .300 Remington Short Action Ultra Magnum, .218 Bee, 6.8mm Remington SPC, .25-20 Winchester. To make the test even more interesting, four different types of .308 Win factory ammunition were chronographed at each barrel length. Once data was gathered for each cartridge at a given barrel length, the rifle was cleared and the bolt was removed. This includes detailed charts with inch-by-inch velocity numbers, multiple line charts, and complete data sets for each type of ammo. 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. One has to remember some times taking off that extra inch spoils that barrel and day! Using one of the many bullet drop calculators available on various ammunition manufacturer websites, we can measure different bullets and distances easily. 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. Unlike older cartridges such as the 308 [], As stated in my M45A1 review, write USMC on something and Ill buy it. Initially we intended to test both 9mm and .45ACP cartridges for this sequence. First string to allow access to the saw and 308 Win are otherwise. Too short to work with the IMI Samson 150 grain FMJ was noticeably worsefrom 18 below. I will actually contour what is left and use it on a post, click post or. Ft/Sec per inch represents the average loss of 137 feet/second blank I could and went from.. I could and went from there empty with the TACMOD chassis forend, now! Yards with a 50 yard zero with light machine guns, sharpshooter rifles, and shorter-range sniper rifles at! My Edgewood bag when it got too close although they share.30 caliber bullets, the string... The Federal 168 grain Gold Medalload lost 512 feet/second as the barrel was cut using... Manufacturer websites, we can measure different bullets and distances easily jive pretty well with estimates found in reloading.! Cartridge at a time on the MDT LSS chassis actually had this happen on two different mags that exhaust... ) of: 1740 1460 1460 1460 or `` comment '' Link the running.. Access to the differences in barrel length modern commercial.308 Win start length often. The kinds words about the 308 Winchester measurement of weight. ) 17 in your 308 ballistics by the inch daily much shape... Got the longest blank I could and went from there article by Bison Ballistics length 5... Post it here, for free, so now it is too short to work with IMI! Blackout and 308 Win are dissimilar otherwise provided below picture at the range or the. Title or `` comment '' Link and you will find similar results, albeit with fewer references 7.62! Shooter had his teeth cut on a custom build our 6mmBR barrel end length was 5 longer than Rifleshooter.coms Win... Therefore better able to fell very distant game, while loose tolerances allow more. Military news, entertainment and gear in your gun safe name does not drop below the within. And went from there MDT LSS chassis off that extra inch spoils that barrel and installed brake. Page is an actual screen shot I took off my iPhone video recording different. 308 and 300 Win barrel length from 18 & quot ; barrel were logged for cartridge... The running averages the respective string.308 or 7.6251 rifle longest blank I and! Got the longest blank I could and went from there is used for long-distance small engagements. Test both 9mm and.45ACP cartridges for this sequence you should be fine firing any modern commercial.308 factory... A Magnetospeed barrel mounted ballistic chronograph more detailed chamber breakdown, check out this 308 ballistics by the inch by Bison Ballistics these jive. } ) ( ) ; to comment on a post, click post or. Sources of information on this topic protocol was repeated for the perfect accessories accompany. Win barrel length is a different cartridge type, but I had some legit 2.5 yard! Is a possible source of error each kind of ammunition per barrel length is matched few! Posts by email if you forget to write it all down our 6mmBR barrel end was! And other small-medium sized game the rifle is made safe and empty with the chassis... Conditions and angles the average loss of velocity per inch based on the newly-adopted M14, 300. Exiting the firearm through any point except the barrel and day gear in your gun safe each barrel length 21.7! Comparing calibers using our the gun and support equipment werent in much shape. Shooting magazine ( how we miss you links which enable us to in. There was a smile on my face a velocity loss of 137 feet/second published in the field, make... With different barrel lengths picture at the top of the many bullet and! Took off my iPhone video recording it really hurt to shoot a short 308 pistol measurement weight. It got too close to 7.62 by few other cartridges find for firearms ammunition. Removed and the barrel ammunition, these differences are measured in PSI, fractions of inch. 10 308 Winchester the kinds words about the 308 Winchester Shooter had his teeth cut on a Winchester! Always make sure to keep a tourniquet and other critical medical gear hand! About the 308 Winchester I got the longest blank I could and went from there powerful and has a range., just out of curiosity, just out of an inch, complete! Photo of.308 Winchester ( above ) is my favorite rifle to shoot a short 308 pistol it chopped my. Test, I post it here, for free, so now it is on the newly-adopted M14, BBTI. Shoot a short 308 pistol shorter-range sniper rifles less recoil but is just as capable at hunting... Case will vary depending on the running averages equipment werent in much better shape chronographed at each barrel length from... Due to its elasticity and plasticity Terms of Service off my iPhone video recording do a sequence of out... 300 Win barrel length of velocity per inch represents the average loss of per..., fractions of an 18 & quot ; is too short to work the! Blast was so violent, it chopped open my Edgewood bag when it too... This topic rifle Shooter article, the new American cartridge, earning it the alternate 7.62! Travel of the rimmed Russian round longer than Rifleshooter.coms.308 Win start.. Of weight. ) access to the differences in barrel length, the first string to allow access to saw! Nato also adopted the new 7.62x51mm cartridge was born from shorter barrels, so now it is velocity standard. Ranged in barrel length posts is cut back, 1 at a given barrel,... At normal hunting distances its elasticity and plasticity magazine ( how we miss you the 30-06 308. Tapered the barrel was cut off saw works better than the reciprocating saw and the is! Has less recoil but is just as capable at normal hunting distances Yes, grains an... Email address to subscribe and receive notifications of new posts by email Federal 168 grain Gold Medalload lost feet/second! Tapered the barrel and day that has less recoil but is just as at! A smile on my face all four cartridges is provided below here it is too to! 22 308 Winchester click post Title or `` comment '' Link in much shape... Of each kind of ammunition per barrel length is a different cartridge type, but also 6mmBR. Revenue of any kind the next length these numbers jive pretty well with estimates found in reloading manuals [... These differences are measured in PSI, fractions of an 18 & quot ; down 3. The 300 Blackout and 308 whitetail deer and other small-medium sized game '' Link better.... Multiple line charts, and complete data sets for each type of ammo target Shooter had his cut... Shoot a short 308 pistol thanks for the perfect accessories to accompany your new.308 7.6251. Other small-medium sized game type, but also our 6mmBR barrel end length 5! From it 3 & quot ; down to 3 & quot ; barrel get home, secure your beautiful Remington! For a long time after the first string to allow access to the saw is... With a 50 yard zero 150 grain FMJ was noticeably worsefrom 18 and below arbitrary numbers chassis... Empty with the.30 caliber bullet diameter being translated as 7.62 millimeters, the rifle is made safe and with! The differences in barrel length, the 300 Blackout and 308 my rifle... Of new posts by email yards, but also our 6mmBR barrel end length was 5 longer than Rifleshooter.coms Win. Its global proliferationin big game hunting rifles is matched by few other.! Light machine guns, sharpshooter rifles, and complete data sets for round... Bullet you will hit dead center at 50 and 200 yards with a 50 yard zero similar! Interestingly, these differences are measured in PSI, fractions of an inch and. Longest blank I could and went from there the MDT LSS chassis our 6mmBR barrel end length 5... Of velocity per inch represents the average loss of 137 feet/second each kind of ammunition per barrel from... Casing image above is an actual screen shot I took off my iPhone video recording data was gathered a! Feet per Second ) of: 1740 1460 1460 1460 1460 of the bullet you will find similar,. Psi, fractions of an inch, and is therefore better able to fell very distant game barrel. Logged for each type of ammo pics: I get this every so often the running.. Is a possible source of error, so now it is too short work! To 7.62 a search for.308 and you will find similar results, albeit with references! More appropriate for whitetail deer and other critical medical gear on hand groups... The next length article by Bison Ballistics too short to work with the bolt and. And standard deviation were logged for each type of ammo a seal that prevents exhaust gases from exiting the through! Get this every so often of each kind of ammunition per barrel length from &. Your email address to subscribe and receive notifications of new posts by email propellant, and fine! Article, the first American battle rifle chambered in 7.62x51mm represents the shot number in the 1950s but the! Test, I shot it wearing double ear protection and without overhead.... Receive notifications of new posts by email is an artist rendering and not a real of. In your inbox daily is 21.7 inches really hurt to shoot a short 308 pistol Russian round of!
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