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Rifles, Reloading, Optics, Equipment
Reloading
TIGHTEN PRIMER POCKETS, here's how.
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<blockquote data-quote="crkckr" data-source="post: 3006351" data-attributes="member: 78056"><p>The size of the ball is not critical and I used the same 1/4" diameter ball for both large and small primer pockets.</p><p></p><p>Last sumner I was doing some work ups using new, Starline 10mm brass. The primer pockets started to get loose by the 3rd or 4th loading. I was *not* loading lite loads by any means, but definitely pushing limits.</p><p></p><p>I also made up a primer pocket checker for both large & small pockets. It's like a go-no go gage, in that if I can insert it into a pocket, the pocket is too large & has to be reduced in size to securely hold a primer. I gage the cases and if necessary, a couple or three whacks with the hammer and pin and that was it! Some of cases failed (neck cracks) at up to 19 loadings (!) and I never had to reduce the primer pockets a second time! I have a small piece of flat steel that I drilled a pocket for the ball bearing to sit in and as long I hit everything square, the ball stays in the pocket drilled in the steel. </p><p></p><p>You are NOT driving a nail, so hitting the pin with everything you have is not necessary! Just 2 - 3 hits is usually all it takes to resize the primer pocket. And I use a small framing hammer, not a roofing hammer! Just like when using an inertia tool to pull bullets, you do not need to bash the living crap out of it! The more consistent your hammer strokes are, the better to judge how many hits are necessary to reform the primer pocket!</p><p>Cheers, </p><p>crkckr</p></blockquote><p></p>
[QUOTE="crkckr, post: 3006351, member: 78056"] The size of the ball is not critical and I used the same 1/4" diameter ball for both large and small primer pockets. Last sumner I was doing some work ups using new, Starline 10mm brass. The primer pockets started to get loose by the 3rd or 4th loading. I was *not* loading lite loads by any means, but definitely pushing limits. I also made up a primer pocket checker for both large & small pockets. It's like a go-no go gage, in that if I can insert it into a pocket, the pocket is too large & has to be reduced in size to securely hold a primer. I gage the cases and if necessary, a couple or three whacks with the hammer and pin and that was it! Some of cases failed (neck cracks) at up to 19 loadings (!) and I never had to reduce the primer pockets a second time! I have a small piece of flat steel that I drilled a pocket for the ball bearing to sit in and as long I hit everything square, the ball stays in the pocket drilled in the steel. You are NOT driving a nail, so hitting the pin with everything you have is not necessary! Just 2 - 3 hits is usually all it takes to resize the primer pocket. And I use a small framing hammer, not a roofing hammer! Just like when using an inertia tool to pull bullets, you do not need to bash the living crap out of it! The more consistent your hammer strokes are, the better to judge how many hits are necessary to reform the primer pocket! Cheers, crkckr [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
TIGHTEN PRIMER POCKETS, here's how.
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