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Rifles, Reloading, Optics, Equipment
Reloading
Lets talk about primer pockets
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<blockquote data-quote="Fiftydriver" data-source="post: 210028" data-attributes="member: 10"><p>I have tested this quite a bit in my wildcats and more then anything in my 338 AM where the brass quality has declined a bit.</p><p> </p><p>Its common to get spooked when you seat a primer and it seats with little pressure but I to asked is this really a problem.</p><p> </p><p>My standard original load would loosen primer pockets up within 2 firings, noticably loosened. So I dropped the load back a bit for these cases, only 50 fps or so off the original velocity level.</p><p> </p><p>Primer pockets would loosen up around 3-4 firings but they would still hold a primer. I continued firing the cases with this same load up to 6-7 firings and while the primer pockets were what would be considered very loose, there was still no gas leakage. I stopped at 7 firings as this is totally acceptable to me in this chambering, in fact 5 firings is what I was looking to attain.</p><p> </p><p>In my opinion, if you are not seeing any gas leakage, your cases are still usable. For how long depends on the load and the brass. Many cases will expand on the first couple firings and then seem to stablize for several firings after that as far as primer pocket fit.</p><p> </p><p>If your using loads that are leaving heavy ejector rings on your case heads, your pushing pressures pretty hard and your cases will not last as long so keep that in mind.</p><p> </p><p>If your using a load within the specs of the cartridge your shooting, as long as the case is holding the primer with enough force that it can not move and you are not getting any gas leakage, go ahead and use them.</p><p> </p><p>You can often see minute gas leakage if you take a bright light and look at the side walls of the primer pocket. If they appear matte finished at all, there is some gas getting around the primer cup lip. at times, this will only extend half way up the wall where it is then sealed off by the expanded primer cup. If the primer pocket wall is "matted" all the way up, your getting some gas leakage and generally you will see this on your bolt face.</p><p> </p><p>Over time carbon will build up around your firing pin hole at best and at times you will get actual erosion in a ring around the firing pin on the bolt face. If your seeing this in any way, get new brass!!!</p><p> </p><p>Kirby Allen(50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 210028, member: 10"] I have tested this quite a bit in my wildcats and more then anything in my 338 AM where the brass quality has declined a bit. Its common to get spooked when you seat a primer and it seats with little pressure but I to asked is this really a problem. My standard original load would loosen primer pockets up within 2 firings, noticably loosened. So I dropped the load back a bit for these cases, only 50 fps or so off the original velocity level. Primer pockets would loosen up around 3-4 firings but they would still hold a primer. I continued firing the cases with this same load up to 6-7 firings and while the primer pockets were what would be considered very loose, there was still no gas leakage. I stopped at 7 firings as this is totally acceptable to me in this chambering, in fact 5 firings is what I was looking to attain. In my opinion, if you are not seeing any gas leakage, your cases are still usable. For how long depends on the load and the brass. Many cases will expand on the first couple firings and then seem to stablize for several firings after that as far as primer pocket fit. If your using loads that are leaving heavy ejector rings on your case heads, your pushing pressures pretty hard and your cases will not last as long so keep that in mind. If your using a load within the specs of the cartridge your shooting, as long as the case is holding the primer with enough force that it can not move and you are not getting any gas leakage, go ahead and use them. You can often see minute gas leakage if you take a bright light and look at the side walls of the primer pocket. If they appear matte finished at all, there is some gas getting around the primer cup lip. at times, this will only extend half way up the wall where it is then sealed off by the expanded primer cup. If the primer pocket wall is "matted" all the way up, your getting some gas leakage and generally you will see this on your bolt face. Over time carbon will build up around your firing pin hole at best and at times you will get actual erosion in a ring around the firing pin on the bolt face. If your seeing this in any way, get new brass!!! Kirby Allen(50) [/QUOTE]
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Lets talk about primer pockets
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