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Long Range Hunting & Shooting
Thoughts on twist rate for 32 " barrel 300wm
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<blockquote data-quote="MagnumManiac" data-source="post: 1591739" data-attributes="member: 10755"><p>I comfortably get 3200 FPS with 230's and 3350 with 215's in a 30" barrel, 4 groove 1:10" twist. I am not running either hot according to my pressure trace.</p><p>Funny thing, my 3 groove 28" barrel gets almost identical velocities. I have ordered 3 Bartlein barrels, another 2-3 month wait and I will post results. Have gone with 3 groove 1:10" twist in 30 cal and 1:8" twist in 264 cal.</p><p></p><p>The 215 above surpasses the 230 by 1200yrds according to my app, Ballistic AE.</p><p>The RUM would be better suited for the extra heavies.</p><p></p><p>Cheers.</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 1591739, member: 10755"] I comfortably get 3200 FPS with 230’s and 3350 with 215’s in a 30” barrel, 4 groove 1:10” twist. I am not running either hot according to my pressure trace. Funny thing, my 3 groove 28” barrel gets almost identical velocities. I have ordered 3 Bartlein barrels, another 2-3 month wait and I will post results. Have gone with 3 groove 1:10” twist in 30 cal and 1:8” twist in 264 cal. The 215 above surpasses the 230 by 1200yrds according to my app, Ballistic AE. The RUM would be better suited for the extra heavies. Cheers. [/QUOTE]
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Thoughts on twist rate for 32 " barrel 300wm
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