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Long Range Hunting & Shooting
Copper Monos - How to choose the right weight(and maybe caliber)?
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<blockquote data-quote="yorke-1" data-source="post: 2625836" data-attributes="member: 11960"><p>Pretty much all of those questions come down to personal preference. </p><p></p><p>I prefer to use bullet weights on the heavier end of what will stabilize in my barrel. I don't necessarily believe they're better, it's just a matter of preference. I've also had better luck finding accurate and consistent loads when using heavier bullets in large cases like the RUM.</p><p></p><p>For caliber, I'll always pick the larger bore diameter. That's just a preference though, not because I believe they're more effective. I only shoot the smaller calibers when I have a specific project gun that I'm working with. If I'm just grabbing the rifle that I want to use, it's a 375 of some sort.</p><p></p><p>I've tested a bunch of different bullets under the same conditions, and I've consistently seen monos perform better when driven at high velocity with above-average (1.5+ SG) stability. Your options to get there are to either use a faster rifling twist, larger capacity cartridge, or a lighter (shorter) bullet. Bullet length has a much more dramatic influence on stability than velocity does, so going with a lighter (shorter) bullet is the easiest way to improve stability without a new barrel. I've seen a lot of bullets do weird stuff when they're shot out of the absolute minimum twist rate. I've seen more consistent bullet performance when the bullets impact at higher RPMs. I've also seen better performance when the bullets shed their petals quickly. Weird stuff happens though if the petals don't break off rapidly or symetrically. If you combine minimum stability with an unbalanced bullet, you can almost guarantee an unpredictable penetration path. I don't have any proof, but I'm pretty confident that the JFK "Magic Bullet" was actually the result of an under-stabilized projectile........</p></blockquote><p></p>
[QUOTE="yorke-1, post: 2625836, member: 11960"] Pretty much all of those questions come down to personal preference. I prefer to use bullet weights on the heavier end of what will stabilize in my barrel. I don't necessarily believe they're better, it's just a matter of preference. I've also had better luck finding accurate and consistent loads when using heavier bullets in large cases like the RUM. For caliber, I'll always pick the larger bore diameter. That's just a preference though, not because I believe they're more effective. I only shoot the smaller calibers when I have a specific project gun that I'm working with. If I'm just grabbing the rifle that I want to use, it's a 375 of some sort. I've tested a bunch of different bullets under the same conditions, and I've consistently seen monos perform better when driven at high velocity with above-average (1.5+ SG) stability. Your options to get there are to either use a faster rifling twist, larger capacity cartridge, or a lighter (shorter) bullet. Bullet length has a much more dramatic influence on stability than velocity does, so going with a lighter (shorter) bullet is the easiest way to improve stability without a new barrel. I've seen a lot of bullets do weird stuff when they're shot out of the absolute minimum twist rate. I've seen more consistent bullet performance when the bullets impact at higher RPMs. I've also seen better performance when the bullets shed their petals quickly. Weird stuff happens though if the petals don't break off rapidly or symetrically. If you combine minimum stability with an unbalanced bullet, you can almost guarantee an unpredictable penetration path. I don't have any proof, but I'm pretty confident that the JFK "Magic Bullet" was actually the result of an under-stabilized projectile........ [/QUOTE]
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Copper Monos - How to choose the right weight(and maybe caliber)?
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