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Rifles, Reloading, Optics, Equipment
Reloading
Copper Bullet Blues
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<blockquote data-quote="davkrat" data-source="post: 972311" data-attributes="member: 6452"><p>One more NorCal native going through the same thing. Wife and I are starting a small business and you wouldn't believe the hoops. Makes the copper bullet thing seem like child's play but I wouldn't leave this state for anything. </p><p></p><p>The 7mags I've loaded for all shoot one hole groups with 150 E-tips. Three different powders have made no difference same ragged holes and sub MOA out to 600 yards. My .308 shooting 150 E-tips has been the most frustrating load I've ever worked on. Tried 5 or 6 powders and still get the same results some groups under MOA but then I'll get a few that go 2-3 MOA. No rhyme or reason and the strangest thing is I am more likely to shoot a 3" group at 400 than shoot a 3" group at 200? I really believe you have to shoot the copper bullets FAST. Our 7 mags can get the 150s over 3000fps my .308 struggles to safely get them above 2700. Forget comparing the BC to lead core bullets unless you are shooting g a powerful magnum that can really launch the heavy for caliber bullets. With lead free more speed is better than a heavy with high BC both for accuracy and on game performance (expansion). </p><p></p><p>I think the 150 in a 7mag hits that sweet spot of having a high enough BC but being light and short enough to be driven fast while the smallest weight in .308 is a bit much for the more modest .30 cases. I'd say if you can't hit 3000+ fps you need to look for a lighter bullet unless you just want to shoot pigs inside 400 yards (my .308 Etip load). Also .050" off the lands has been the sweet spot for our guns.</p></blockquote><p></p>
[QUOTE="davkrat, post: 972311, member: 6452"] One more NorCal native going through the same thing. Wife and I are starting a small business and you wouldn't believe the hoops. Makes the copper bullet thing seem like child's play but I wouldn't leave this state for anything. The 7mags I've loaded for all shoot one hole groups with 150 E-tips. Three different powders have made no difference same ragged holes and sub MOA out to 600 yards. My .308 shooting 150 E-tips has been the most frustrating load I've ever worked on. Tried 5 or 6 powders and still get the same results some groups under MOA but then I'll get a few that go 2-3 MOA. No rhyme or reason and the strangest thing is I am more likely to shoot a 3" group at 400 than shoot a 3" group at 200? I really believe you have to shoot the copper bullets FAST. Our 7 mags can get the 150s over 3000fps my .308 struggles to safely get them above 2700. Forget comparing the BC to lead core bullets unless you are shooting g a powerful magnum that can really launch the heavy for caliber bullets. With lead free more speed is better than a heavy with high BC both for accuracy and on game performance (expansion). I think the 150 in a 7mag hits that sweet spot of having a high enough BC but being light and short enough to be driven fast while the smallest weight in .308 is a bit much for the more modest .30 cases. I'd say if you can't hit 3000+ fps you need to look for a lighter bullet unless you just want to shoot pigs inside 400 yards (my .308 Etip load). Also .050" off the lands has been the sweet spot for our guns. [/QUOTE]
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