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Long Range Hunting & Shooting
264 Win Mag LR bullets
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<blockquote data-quote="lancetkenyon" data-source="post: 1952023" data-attributes="member: 68875"><p>All my fast 6.5s are 1:7.5" because I built them to shoot the heavies, so can't help you there. I would not shoot them in my daughter's 6.5 SLR 1:8" though. I run a 130 AR Hyb @ 2925 and they are stupid accurate.</p><p></p><p>I can tell you I never got adequate results with the 142 NABLR out of any 1:8" twist rifle I tried them in. 6.5 SS, 6.5 SAUM, even a 1:9" Rem Sendero @ 3150fps. Put a 129 NABLR in there @ 3230, and something magic happened. Night and day.</p><p></p><p>Try them. Not just at 100/200, but at 1000. They could stabilize fine for you. They might fall apart past 500. Only YOUR gun and conditions can tell you what will happen.</p><p></p><p>JBM Ballistics shows 1.501 SG @ sea level and 59* in a 1:9" twist @ 3150fps. 1.443" bullet w. .140" plastic tip (1.303" jacket length). That is on the cusp of marginal. You go up in elevation, GS increases.</p><p></p><p>Bison Ballistics shows 1.23 SG same inputs other than no input for plastic tip length, just overall bullet length. Go to 1.303", 1.63 SG.</p><p></p><p>Berger shows 1.23 GS too, same parameters, no plastic tip length. Go to 1.303" length, 1.66 SG.</p><p></p><p>Just many others giving you advice from past experience.</p></blockquote><p></p>
[QUOTE="lancetkenyon, post: 1952023, member: 68875"] All my fast 6.5s are 1:7.5" because I built them to shoot the heavies, so can't help you there. I would not shoot them in my daughter's 6.5 SLR 1:8" though. I run a 130 AR Hyb @ 2925 and they are stupid accurate. I can tell you I never got adequate results with the 142 NABLR out of any 1:8" twist rifle I tried them in. 6.5 SS, 6.5 SAUM, even a 1:9" Rem Sendero @ 3150fps. Put a 129 NABLR in there @ 3230, and something magic happened. Night and day. Try them. Not just at 100/200, but at 1000. They could stabilize fine for you. They might fall apart past 500. Only YOUR gun and conditions can tell you what will happen. JBM Ballistics shows 1.501 SG @ sea level and 59* in a 1:9" twist @ 3150fps. 1.443" bullet w. .140" plastic tip (1.303" jacket length). That is on the cusp of marginal. You go up in elevation, GS increases. Bison Ballistics shows 1.23 SG same inputs other than no input for plastic tip length, just overall bullet length. Go to 1.303", 1.63 SG. Berger shows 1.23 GS too, same parameters, no plastic tip length. Go to 1.303" length, 1.66 SG. Just many others giving you advice from past experience. [/QUOTE]
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