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Long Range Hunting & Shooting
Rebarreling 300saum what twist to order?
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<blockquote data-quote="SMK1000plus" data-source="post: 1600414" data-attributes="member: 93846"><p>1:10" is pretty much the standard twist for most .308 caliber factory barrels, and will stabilize most bullet weights/types but, the 1:9" twist in my experience is better, especially with the solids or the +210gr bullets in colder temperatures. A quality 1:9" twist barrel, properly installed should be outstanding from 150gr on up and will stabilize even the heavy solids with no problem, in very cold temperatures (dense air). </p><p></p><p>I've a couple of 300 Win Mags with 1:8" twist and find that, while still very accurate, is not necessary for any bullets I use, and I use 230gr Bergers or 240gr SMK bullets a lot. The issue I do see with the 1:8" twist in my 300 Win Mags, with the heavy bullets is rifle torque! Upon firing, I can definitely feel the grip twist in my hand. I really don't like, and certainly don't need a 1:8" twist in any of my magnum 30 calibers. The only place I see use for 1:8" twist or more, in 30 calibers is for subsonic use or some custom extra-heavy solids.</p><p></p><p>For me, 1:9" twist is perfect in 30 caliber, starting at 30-06 and anything above. For 308 Win and down 1:11 is the ticket for me. YMMV</p></blockquote><p></p>
[QUOTE="SMK1000plus, post: 1600414, member: 93846"] 1:10" is pretty much the standard twist for most .308 caliber factory barrels, and will stabilize most bullet weights/types but, the 1:9" twist in my experience is better, especially with the solids or the +210gr bullets in colder temperatures. A quality 1:9" twist barrel, properly installed should be outstanding from 150gr on up and will stabilize even the heavy solids with no problem, in very cold temperatures (dense air). I've a couple of 300 Win Mags with 1:8" twist and find that, while still very accurate, is not necessary for any bullets I use, and I use 230gr Bergers or 240gr SMK bullets a lot. The issue I do see with the 1:8" twist in my 300 Win Mags, with the heavy bullets is rifle torque! Upon firing, I can definitely feel the grip twist in my hand. I really don't like, and certainly don't need a 1:8" twist in any of my magnum 30 calibers. The only place I see use for 1:8" twist or more, in 30 calibers is for subsonic use or some custom extra-heavy solids. For me, 1:9" twist is perfect in 30 caliber, starting at 30-06 and anything above. For 308 Win and down 1:11 is the ticket for me. YMMV [/QUOTE]
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Rebarreling 300saum what twist to order?
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