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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Hard hitting, accurate load with a .308 168 grain berger bullet.
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<blockquote data-quote="Bart B" data-source="post: 676154" data-attributes="member: 5302"><p>The only barrel-length vs. muzzle-velocity I ever did was with a 22, 24 and 26 inch barrel all with virtually the same .308 Win. chamber and bore dimensions. Using the same lot of handloads giving a 25 fps velocity spread about a 2680 fps average in the 26 inch barrel, the 24 and 22 inch ones shot 168's out 48 and 42 fps respectively slower. That's about a 23 fps per inch difference. SAAMI's own tests show about the same numbers. Check out page 22 in the following link: </p><p></p><p><a href="http://www.saami.org/specifications_and_information/publications/download/206.pdf" target="_blank">http://www.saami.org/specifications_and_information/publications/download/206.pdf</a></p><p></p><p>Cloverleaf groups have all shot holes touching. That's 3/10ths of an inch center-to-center for the largest one. "groups" implies more than one group. All were 3/10ths of an inch or less at 200 yards? That's .015 MOA. Wow!!!!!</p></blockquote><p></p>
[QUOTE="Bart B, post: 676154, member: 5302"] The only barrel-length vs. muzzle-velocity I ever did was with a 22, 24 and 26 inch barrel all with virtually the same .308 Win. chamber and bore dimensions. Using the same lot of handloads giving a 25 fps velocity spread about a 2680 fps average in the 26 inch barrel, the 24 and 22 inch ones shot 168's out 48 and 42 fps respectively slower. That's about a 23 fps per inch difference. SAAMI's own tests show about the same numbers. Check out page 22 in the following link: [url]http://www.saami.org/specifications_and_information/publications/download/206.pdf[/url] Cloverleaf groups have all shot holes touching. That's 3/10ths of an inch center-to-center for the largest one. "groups" implies more than one group. All were 3/10ths of an inch or less at 200 yards? That's .015 MOA. Wow!!!!! [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Hard hitting, accurate load with a .308 168 grain berger bullet.
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