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Rifles, Reloading, Optics, Equipment
Reloading
155gr Sierra Palma in 300WM?
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<blockquote data-quote="Bart B" data-source="post: 520156" data-attributes="member: 5302"><p>I've shot Sierra's Palma bullet from a .308 Win. case in a 32" 1:13 twist barrel and got 3160 fps. A 1:14 twist may be best at that speed which is what your .300 may well push 'em out at.</p><p></p><p>Spinning bullets too fast is often dangerous for accuracy. Any unbalance the bullet has will cause it to jump off the bore axis as it exits; which way depends on what side the heavy part's on. The centrifugal force at that speed from a 1:11 twist will be awsome. If the rifling's too deep, the engraved bullet jacket may be weakened enough to let the bullet fly apart.</p><p></p><p>I"d use a reduced load of Varget or IMR4895 to get the muzzle velocity around 2900 fps. You should do much better with those bullets leaving at that speed.</p><p></p><p>And seat the bullets out as far as possible then single load 'em for best accuracy.</p></blockquote><p></p>
[QUOTE="Bart B, post: 520156, member: 5302"] I've shot Sierra's Palma bullet from a .308 Win. case in a 32" 1:13 twist barrel and got 3160 fps. A 1:14 twist may be best at that speed which is what your .300 may well push 'em out at. Spinning bullets too fast is often dangerous for accuracy. Any unbalance the bullet has will cause it to jump off the bore axis as it exits; which way depends on what side the heavy part's on. The centrifugal force at that speed from a 1:11 twist will be awsome. If the rifling's too deep, the engraved bullet jacket may be weakened enough to let the bullet fly apart. I"d use a reduced load of Varget or IMR4895 to get the muzzle velocity around 2900 fps. You should do much better with those bullets leaving at that speed. And seat the bullets out as far as possible then single load 'em for best accuracy. [/QUOTE]
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Reloading
155gr Sierra Palma in 300WM?
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