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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
270 weatherby bullet choice
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<blockquote data-quote="Bart B" data-source="post: 765988" data-attributes="member: 5302"><p>Steven, you would have liked watching a bunch of guys at the 1000 yard range checking out our stuff. I had just built an 8.5 pound .300 Win. Mag. with a worn out 30" long Palma rifle barrel in .308 Win. That barrel was set back 2 inches then shortened to 26" long. It's 1:13 twist was shooting Sierra 180-gr. HPMK's about 3300 fps and shot MOA or better; not too bad considering the recoil it had before the bullet left the barrel. </p><p></p><p>None of them believed a 1:13 twist shooting 180's form a .300 Winnie would do that well. When I told them that bullet was spinning about 198,000 rpm out the muzzle. That same bullet leaving a .308 Win. 1:12 twist barrel at 2650 fps spun about 160,000 rpm and was a favorite long range load from M14NM's, some of them finally agreed it was probably spinning too fast and a 1:14 twist would have been better.</p><p></p><p>I'd called Nosler regarding an issue someone brought up about their bullets and rifling twists and their response was similar to what your said Barnes' was. There are some businesses in the shooting sports industry who lack understanding and knowledge of reality; others lead the way in what works best because they do.</p></blockquote><p></p>
[QUOTE="Bart B, post: 765988, member: 5302"] Steven, you would have liked watching a bunch of guys at the 1000 yard range checking out our stuff. I had just built an 8.5 pound .300 Win. Mag. with a worn out 30" long Palma rifle barrel in .308 Win. That barrel was set back 2 inches then shortened to 26" long. It's 1:13 twist was shooting Sierra 180-gr. HPMK's about 3300 fps and shot MOA or better; not too bad considering the recoil it had before the bullet left the barrel. None of them believed a 1:13 twist shooting 180's form a .300 Winnie would do that well. When I told them that bullet was spinning about 198,000 rpm out the muzzle. That same bullet leaving a .308 Win. 1:12 twist barrel at 2650 fps spun about 160,000 rpm and was a favorite long range load from M14NM's, some of them finally agreed it was probably spinning too fast and a 1:14 twist would have been better. I'd called Nosler regarding an issue someone brought up about their bullets and rifling twists and their response was similar to what your said Barnes' was. There are some businesses in the shooting sports industry who lack understanding and knowledge of reality; others lead the way in what works best because they do. [/QUOTE]
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