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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7.5 twist rate 243 Win
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<blockquote data-quote="Hugnot" data-source="post: 2802943" data-attributes="member: 115658"><p>More Sg stuff:</p><p></p><p>A 7.5 twist would get marginal stability with a 112 Berger at 35 F - good groups possible but max BC might not be realized. The velocities shown are sort of high for a .243W loaded under 60K; Sg values would be slightly less for 100-200 fps lower velocities. I have an 8 twist .243 and am happy with 105 grain bullets having good form factors.</p><p></p><p>[ATTACH]457458[/ATTACH]</p></blockquote><p></p>
[QUOTE="Hugnot, post: 2802943, member: 115658"] More Sg stuff: A 7.5 twist would get marginal stability with a 112 Berger at 35 F - good groups possible but max BC might not be realized. The velocities shown are sort of high for a .243W loaded under 60K; Sg values would be slightly less for 100-200 fps lower velocities. I have an 8 twist .243 and am happy with 105 grain bullets having good form factors. [ATTACH alt="Screenshot (636).png"]457458[/ATTACH] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7.5 twist rate 243 Win
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