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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
270 win vs 270wsm
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<blockquote data-quote="bigngreen" data-source="post: 959800" data-attributes="member: 13632"><p>I can see 3500 fps with a molly 130, a 26in barrel I have runs the 140's at 3400 at the top with naked bullets, accuracy is at 3300-3350 with it and 20+ firings on the brass.</p><p>My 27.5 inch barrel is throated and it STARTS showing pressure with the 150's at 3300 fps and shooting them easy at 3250 fps, never loaded anything lighter in it though.</p><p>The issue with the 270 WSM is that early in it's life if it's SAMMI spec you'll get pressure spikes and it will show pressure early at odd times, once your throat mellows out you can get more performance, if you throat it you get significantly more performance.</p></blockquote><p></p>
[QUOTE="bigngreen, post: 959800, member: 13632"] I can see 3500 fps with a molly 130, a 26in barrel I have runs the 140's at 3400 at the top with naked bullets, accuracy is at 3300-3350 with it and 20+ firings on the brass. My 27.5 inch barrel is throated and it STARTS showing pressure with the 150's at 3300 fps and shooting them easy at 3250 fps, never loaded anything lighter in it though. The issue with the 270 WSM is that early in it's life if it's SAMMI spec you'll get pressure spikes and it will show pressure early at odd times, once your throat mellows out you can get more performance, if you throat it you get significantly more performance. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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270 win vs 270wsm
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