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Rifles, Reloading, Optics, Equipment
Reloading
Help identify preasure signs ?
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<blockquote data-quote="Clark" data-source="post: 356911" data-attributes="member: 6600"><p>1) The 1889 Mauser 7.65x53mm case head design, when built with a large Boxer primer and shot in a strong rifle is good for 62kpsi factory ammo and 65kpsi custom hand loads.</p><p>Pressure sign: primers fall out</p><p>Better pressure sign: primer insertion is too easy</p><p>Best pressure sign: extractor groove grows .001" anywhere around the circle</p><p>Examples: 22-250, 243, 6mm Rem, 250 Savage, 257 Roberts, 25-06, 260 Rem, 6.5x55 [US brass], 270, 7mm-08, 7x57mm, 280, 308, 7.62x51mm, 30-06, 8x57mm, 338F, 358, and 35W.</p><p></p><p>2) The 1950 designed .222 case head with small rifle primer is good for 75 kpsi with custom handloads</p><p>Pressure sign: primers fall out</p><p>Better pressure sign: primer insertion is too easy</p><p>Best pressure sign: extractor groove grows .001" anywhere around the circle</p><p>Examples: 17 Rem, 204 Ruger, 221 Rem Fireball, .222 Win, .223 Win, 5.56x45mm, .222 Rem mag, 6x45mm.</p><p></p><p>3) The 1889 Mauser 7.65x53mm case head design, when built with a small primer and shot in a strong rifle with bushed firing pin hole is good for 85kpsi custom hand loads.</p><p>Pressure sign: primer pierces</p><p>Better pressure sign: extreme cratering of primer</p><p>Examples: 22BR, 6mmBR, 6x47mm, 6.5x47mm, 7mmBR, 30BR, Lapua small primer 308</p></blockquote><p></p>
[QUOTE="Clark, post: 356911, member: 6600"] 1) The 1889 Mauser 7.65x53mm case head design, when built with a large Boxer primer and shot in a strong rifle is good for 62kpsi factory ammo and 65kpsi custom hand loads. Pressure sign: primers fall out Better pressure sign: primer insertion is too easy Best pressure sign: extractor groove grows .001" anywhere around the circle Examples: 22-250, 243, 6mm Rem, 250 Savage, 257 Roberts, 25-06, 260 Rem, 6.5x55 [US brass], 270, 7mm-08, 7x57mm, 280, 308, 7.62x51mm, 30-06, 8x57mm, 338F, 358, and 35W. 2) The 1950 designed .222 case head with small rifle primer is good for 75 kpsi with custom handloads Pressure sign: primers fall out Better pressure sign: primer insertion is too easy Best pressure sign: extractor groove grows .001" anywhere around the circle Examples: 17 Rem, 204 Ruger, 221 Rem Fireball, .222 Win, .223 Win, 5.56x45mm, .222 Rem mag, 6x45mm. 3) The 1889 Mauser 7.65x53mm case head design, when built with a small primer and shot in a strong rifle with bushed firing pin hole is good for 85kpsi custom hand loads. Pressure sign: primer pierces Better pressure sign: extreme cratering of primer Examples: 22BR, 6mmBR, 6x47mm, 6.5x47mm, 7mmBR, 30BR, Lapua small primer 308 [/QUOTE]
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Help identify preasure signs ?
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