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Rifles, Reloading, Optics, Equipment
Reloading
Primer blow-out damaged my bolt face
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<blockquote data-quote="J E Custom" data-source="post: 675389" data-attributes="member: 2736"><p>OK . </p><p>I didn't want to start an argument but I guess I do owe the poster an explanation.</p><p></p><p>The first thing that the poster implied was that these were all the same loads in 3 different actions.</p><p></p><p>The brass is military Lake city and looks like the primer pockets have eather been reamed (Required)</p><p>if it was crimped or has been shot a lot and the primer pockets are not tight.</p><p></p><p>The first load looks like a normal load as far as pressure but the firing pin hole is on the lose side </p><p>and allows the primer to ex trued into the bolt. (Not to bad for normal loads)</p><p></p><p>The second load was over pressure and with a loose primer pocket moved back and pierced</p><p>the primer pushing the anvil out of the primer cup and there is some ejector marks because of over pressure.</p><p>The Inside of the primer pocket is scorched and had the primer not been pierced it would </p><p>have blown possibly cutting the bolt face.</p><p></p><p>The third round is the real problem. It was a grossly over loaded round and stuck in the </p><p>chamber so hard that the extractor cut its way out through the case head durring the </p><p>process of beating the bolt open. also the use of a cleaning rod or something to beat the </p><p>case out of the chamber is what caused the damage to the case web. It was stuck so bad </p><p>that the hammering cracked the web of the case and even enlarged the primer hole.</p><p></p><p>If head space had been excessive the last two cases would have separated just in front of the </p><p>web. This is a classic case of loose primer pockets and excessive overloads and had nothing </p><p>to do with the rifle/rifles they were fired in.</p><p></p><p>I would not use this action again, or at least until extensive testing was done on the action</p><p>and the bolt.</p><p></p><p>People bring me stuff like this to fix all the time and and don't realise how close they may </p><p>have come to destroying a life or at the least a good rifle.</p><p></p><p>I don't care what rifle these rounds were fired in this was a simple case of over loads on </p><p>military cases.</p><p></p><p>I fired military brass for 14+ years In National Highpower matches never had a problem</p><p>and read many times that you should reduce the book loads for military brass because of </p><p>primer pockets and less case capacity.</p><p></p><p>PS: I only used Lake city brass then and still do and I have fired in excess of 20,000 rounds</p><p>of it.</p><p></p><p>Reloading is a fun and rewarding part of shooting but it can also be a killer if done without </p><p>respect for what can happen.</p><p></p><p>I will say to all reading this "Don't substitute componants unless you start low and work up </p><p>using the same componants and especally if you are going to use military brass.</p><p></p><p>The problem I had was the implication that it was a particular rifles fault not the load.</p><p></p><p>Again ; sorry if I offended any one but someone had to say something.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 675389, member: 2736"] OK . I didn't want to start an argument but I guess I do owe the poster an explanation. The first thing that the poster implied was that these were all the same loads in 3 different actions. The brass is military Lake city and looks like the primer pockets have eather been reamed (Required) if it was crimped or has been shot a lot and the primer pockets are not tight. The first load looks like a normal load as far as pressure but the firing pin hole is on the lose side and allows the primer to ex trued into the bolt. (Not to bad for normal loads) The second load was over pressure and with a loose primer pocket moved back and pierced the primer pushing the anvil out of the primer cup and there is some ejector marks because of over pressure. The Inside of the primer pocket is scorched and had the primer not been pierced it would have blown possibly cutting the bolt face. The third round is the real problem. It was a grossly over loaded round and stuck in the chamber so hard that the extractor cut its way out through the case head durring the process of beating the bolt open. also the use of a cleaning rod or something to beat the case out of the chamber is what caused the damage to the case web. It was stuck so bad that the hammering cracked the web of the case and even enlarged the primer hole. If head space had been excessive the last two cases would have separated just in front of the web. This is a classic case of loose primer pockets and excessive overloads and had nothing to do with the rifle/rifles they were fired in. I would not use this action again, or at least until extensive testing was done on the action and the bolt. People bring me stuff like this to fix all the time and and don't realise how close they may have come to destroying a life or at the least a good rifle. I don't care what rifle these rounds were fired in this was a simple case of over loads on military cases. I fired military brass for 14+ years In National Highpower matches never had a problem and read many times that you should reduce the book loads for military brass because of primer pockets and less case capacity. PS: I only used Lake city brass then and still do and I have fired in excess of 20,000 rounds of it. Reloading is a fun and rewarding part of shooting but it can also be a killer if done without respect for what can happen. I will say to all reading this "Don't substitute componants unless you start low and work up using the same componants and especally if you are going to use military brass. The problem I had was the implication that it was a particular rifles fault not the load. Again ; sorry if I offended any one but someone had to say something. J E CUSTOM [/QUOTE]
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Primer blow-out damaged my bolt face
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