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Rifles, Reloading, Optics, Equipment
Reloading
Primer for lowest ES
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<blockquote data-quote="Bart B" data-source="post: 93685" data-attributes="member: 5302"><p>Competitive highpower (fullbore) rifle shooters who've properly tested primers find the PMC primers made in Russia to produce SD's about 3 or 4 fps. Plus they don't deteriorate over time (~ 5 - 6 months from when made) and start producing much higher SD's like virtually all others do.</p><p></p><p>Other things to do to reduce muzzle velocity spread are:</p><p>* firing pin should protrude from bolt face .055- .060-inch.</p><p>* replace firing pin spring every year.</p><p>* use firing pin spring about 20% stronger than stock.</p><p>* light neck tension on bullets = low spread in release resistance.</p><p>* seat bullets so lands push 'em back a few thousandths so starting resistance is uniformed.</p></blockquote><p></p>
[QUOTE="Bart B, post: 93685, member: 5302"] Competitive highpower (fullbore) rifle shooters who've properly tested primers find the PMC primers made in Russia to produce SD's about 3 or 4 fps. Plus they don't deteriorate over time (~ 5 - 6 months from when made) and start producing much higher SD's like virtually all others do. Other things to do to reduce muzzle velocity spread are: * firing pin should protrude from bolt face .055- .060-inch. * replace firing pin spring every year. * use firing pin spring about 20% stronger than stock. * light neck tension on bullets = low spread in release resistance. * seat bullets so lands push 'em back a few thousandths so starting resistance is uniformed. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Primer for lowest ES
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