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Rifles, Reloading, Optics, Equipment
Reloading
Federal GM210M vs CCI BR-2 LR Primers
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<blockquote data-quote="Bart B" data-source="post: 115879" data-attributes="member: 5302"><p>[ QUOTE ]</p><p>I'm with Roy, group size is only half of the equation.i'm more partial to ES. And Roy says: If you're shooting longer than 300 yds the primer producing the smallest ES and SD would be the selection.</p><p></p><p></p><p>[/ QUOTE ]I'm not with either of these guys. </p><p></p><p>I and many others have shot 20-shot groups at long range using ammo producing the lowest spread or standard deviation in both muzzle velocity and peak pressure only to have its groups three times as large as ammo having medium spreads in these two internal ballistic elements. This all happened with different barrel weights and tapers. If the name of the game is accuracy, that's all that counts.</p><p></p><p>Folks testing the ammo thought that something was happening to the bullets from that ammo with very uniform internal ballistics when fired that caused poor accuracy.</p></blockquote><p></p>
[QUOTE="Bart B, post: 115879, member: 5302"] [ QUOTE ] I'm with Roy, group size is only half of the equation.i'm more partial to ES. And Roy says: If you're shooting longer than 300 yds the primer producing the smallest ES and SD would be the selection. [/ QUOTE ]I'm not with either of these guys. I and many others have shot 20-shot groups at long range using ammo producing the lowest spread or standard deviation in both muzzle velocity and peak pressure only to have its groups three times as large as ammo having medium spreads in these two internal ballistic elements. This all happened with different barrel weights and tapers. If the name of the game is accuracy, that's all that counts. Folks testing the ammo thought that something was happening to the bullets from that ammo with very uniform internal ballistics when fired that caused poor accuracy. [/QUOTE]
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Reloading
Federal GM210M vs CCI BR-2 LR Primers
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