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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.284, 180 gr jlk's or 180 gr smk's
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<blockquote data-quote="Rocky Mountain" data-source="post: 478152" data-attributes="member: 26832"><p>You dont need a 8 twist to stabilize the 180 berger or SMK, 9 twist works fine and will give you more velocity. I've tried the new 180 SMK in a 9 twist, 7mm STW, Retumbo powder, 28 inch barrel and got 3130fps with good accuracy, they have a bit thicker jacket than the 180 berger hunting bullet. I've also shot the 180 berger hunting bullet in a 9 twist 7mm RUM at 3200fps with good accuracy as well, but the hunting bergers some times stop shooting well once the throat ruff up, the j4s can be picky about barrel ruffness. The berger target bullets have thicker jackets and need to be driven fast to get any bullet expansion so not an option in the medium magnums.</p></blockquote><p></p>
[QUOTE="Rocky Mountain, post: 478152, member: 26832"] You dont need a 8 twist to stabilize the 180 berger or SMK, 9 twist works fine and will give you more velocity. I've tried the new 180 SMK in a 9 twist, 7mm STW, Retumbo powder, 28 inch barrel and got 3130fps with good accuracy, they have a bit thicker jacket than the 180 berger hunting bullet. I've also shot the 180 berger hunting bullet in a 9 twist 7mm RUM at 3200fps with good accuracy as well, but the hunting bergers some times stop shooting well once the throat ruff up, the j4s can be picky about barrel ruffness. The berger target bullets have thicker jackets and need to be driven fast to get any bullet expansion so not an option in the medium magnums. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.284, 180 gr jlk's or 180 gr smk's
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