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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
solid copper bullet performance
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<blockquote data-quote="Deleted member 46119" data-source="post: 858668"><p>I load copper for hunting in California. Though not that experience I have come to believe:</p><p></p><p>1. Old rifles need to use lighter copper bullets to maintain accuracy.</p><p> Data: My 270 WBy 12 twist was fine with 130 lead. Copper 130s go sideways. I worked up a load with 95grn copper and it's sub moa.</p><p> Data: My 243 M70 Featherweight will shoot up to 100grn lead but copper must be below 85grns.</p><p>2. Copper does not have the sectional density so it won't carry as far.</p><p> This is just pure physics. No getting around it. Go faster.</p><p>3. Long range is possible with copper. Go faster.</p><p> Data: I load for a friend as we shoot the several of the same calibers. He has taken large feral pigs at over 1000yrds. </p><p> Notes: The rifle was specifically built with a twist for Barnes 180 TTSX and is very sub moa.</p><p></p><p>To me it is easier to get a copper bullet with the same aspect ration length to diameter as the lead bullet to shoot well but you will need to go faster for down range energy.</p></blockquote><p></p>
[QUOTE="Deleted member 46119, post: 858668"] I load copper for hunting in California. Though not that experience I have come to believe: 1. Old rifles need to use lighter copper bullets to maintain accuracy. Data: My 270 WBy 12 twist was fine with 130 lead. Copper 130s go sideways. I worked up a load with 95grn copper and it's sub moa. Data: My 243 M70 Featherweight will shoot up to 100grn lead but copper must be below 85grns. 2. Copper does not have the sectional density so it won't carry as far. This is just pure physics. No getting around it. Go faster. 3. Long range is possible with copper. Go faster. Data: I load for a friend as we shoot the several of the same calibers. He has taken large feral pigs at over 1000yrds. Notes: The rifle was specifically built with a twist for Barnes 180 TTSX and is very sub moa. To me it is easier to get a copper bullet with the same aspect ration length to diameter as the lead bullet to shoot well but you will need to go faster for down range energy. [/QUOTE]
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Rifles, Bullets, Barrels & Ballistics
solid copper bullet performance
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