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Hunting
Long Range Hunting & Shooting
Weatherby Back Country 6.5 RPM Primer cratering
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<blockquote data-quote="WildRose" data-source="post: 2401662" data-attributes="member: 30902"><p>Hmm it may be in "spec" but suffering from an "accumulation of tolerances" or it may simply have a slightly over spec firing pin.</p><p></p><p>It's hard to tell with those photos but I don't see where it looks like the primers are pushing back and flattening. If it did, I'd worry.</p><p></p><p>If you run a fingernail across the margin between the primer and edge of the primer pocket on your reloads and don't feel a "bump" or "dip" that is a sign the pressure is too high.</p><p></p><p>Multiple concentric circles radiating out from the primer mark are as well, they look like waves frozen in time.</p><p></p><p>Many years ago I came close to blowing up a push feed Model 70 hotrodding some 220 Swift and not only was I over loading them I had been using brass fired in another rifle without full length resizing.</p><p></p><p>It blew the firing pin back so far that it sheared off the retaining pin and the "cap" just fell off.</p><p></p><p>I figured out I was dong something wrong at that point.</p><p></p><p>It's amazing we survive so many 'oopses" fooling around with so much pressure with no serious injuries.</p></blockquote><p></p>
[QUOTE="WildRose, post: 2401662, member: 30902"] Hmm it may be in "spec" but suffering from an "accumulation of tolerances" or it may simply have a slightly over spec firing pin. It's hard to tell with those photos but I don't see where it looks like the primers are pushing back and flattening. If it did, I'd worry. If you run a fingernail across the margin between the primer and edge of the primer pocket on your reloads and don't feel a "bump" or "dip" that is a sign the pressure is too high. Multiple concentric circles radiating out from the primer mark are as well, they look like waves frozen in time. Many years ago I came close to blowing up a push feed Model 70 hotrodding some 220 Swift and not only was I over loading them I had been using brass fired in another rifle without full length resizing. It blew the firing pin back so far that it sheared off the retaining pin and the "cap" just fell off. I figured out I was dong something wrong at that point. It's amazing we survive so many 'oopses" fooling around with so much pressure with no serious injuries. [/QUOTE]
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Weatherby Back Country 6.5 RPM Primer cratering
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