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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Question about .308 and 7mm-08 barrels
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<blockquote data-quote="Bart B" data-source="post: 515019" data-attributes="member: 5302"><p>That's a different "rule" than I've heard of. SAAMI states that for two barrels whose bore and chamber have identical dimensions and shooting the same lot of ammo in barrel lengths from 20 to 26 inches, the differences are:</p><p></p><p>Muzzle velocity from 2000 to 2500 fps, 10 fps per inch</p><p></p><p>Muzzle velocity from 2501 to 3000 fps, 20 fps per inch.</p><p></p><p>I've seen about 30 fps per inch between barrels with the same bore and groove dimenions chambered with the same reamer shooting the same .308 Win. load in 26 to 32 inch barrels at muzzle velocities from 2800 fps to 3100 fps.</p></blockquote><p></p>
[QUOTE="Bart B, post: 515019, member: 5302"] That's a different "rule" than I've heard of. SAAMI states that for two barrels whose bore and chamber have identical dimensions and shooting the same lot of ammo in barrel lengths from 20 to 26 inches, the differences are: Muzzle velocity from 2000 to 2500 fps, 10 fps per inch Muzzle velocity from 2501 to 3000 fps, 20 fps per inch. I've seen about 30 fps per inch between barrels with the same bore and groove dimenions chambered with the same reamer shooting the same .308 Win. load in 26 to 32 inch barrels at muzzle velocities from 2800 fps to 3100 fps. [/QUOTE]
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Question about .308 and 7mm-08 barrels
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