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Long Range Hunting & Shooting
Please advise on best 6.5 for my new build
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<blockquote data-quote="entoptics" data-source="post: 2471397" data-attributes="member: 104268"><p>[URL unfurl="true"]https://www.jbmballistics.com/cgi-bin/jbmrecoil-5.1.cgi[/URL]</p><p></p><p>Ran some rough numbers, and 264 Win Mag sounds about perfect. 8-9 lb rifle equals 19-21 ftlbs of recoil with a 135 grain bullet at 3100 fps.</p><p></p><p>I have a 24" 264WM, and am getting 3050 fps with a 147 grain ELDM, though it's a bit hard on my old R-P brass. The 135 SBDII should be an easy 3100 fps, and will stomp on deer/antelope out to 600 yds or more I'd think. Perfectly capable on elk out past 400 probably.</p><p></p><p>Word of caution on the SBDII. I just tried some 140 gr 0.284, and the manufacturers B.C. appears wildly inflated. I measured 3 shots with a LabRadar, and all three came in at 0.500 G1, which is only 89% of the quoted 0.560 G1. 1:8 twist 5R barrel, so more twist than required per manufacturer. Still very good for a 7mm 140 gr class copper hunting bullet, but a heck of a long ways off what the manufacturer claims.</p></blockquote><p></p>
[QUOTE="entoptics, post: 2471397, member: 104268"] [URL unfurl="true"]https://www.jbmballistics.com/cgi-bin/jbmrecoil-5.1.cgi[/URL] Ran some rough numbers, and 264 Win Mag sounds about perfect. 8-9 lb rifle equals 19-21 ftlbs of recoil with a 135 grain bullet at 3100 fps. I have a 24" 264WM, and am getting 3050 fps with a 147 grain ELDM, though it's a bit hard on my old R-P brass. The 135 SBDII should be an easy 3100 fps, and will stomp on deer/antelope out to 600 yds or more I'd think. Perfectly capable on elk out past 400 probably. Word of caution on the SBDII. I just tried some 140 gr 0.284, and the manufacturers B.C. appears wildly inflated. I measured 3 shots with a LabRadar, and all three came in at 0.500 G1, which is only 89% of the quoted 0.560 G1. 1:8 twist 5R barrel, so more twist than required per manufacturer. Still very good for a 7mm 140 gr class copper hunting bullet, but a heck of a long ways off what the manufacturer claims. [/QUOTE]
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Please advise on best 6.5 for my new build
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