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Rifles, Reloading, Optics, Equipment
Reloading
338 lapua pressure? HELP PLEASE
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<blockquote data-quote="J E Custom" data-source="post: 514946" data-attributes="member: 2736"><p>After all of the comments I would check out the ejector. It sounds like it is to long or the retaining</p><p>slot is not long enough to let it move out of the way when the case comes backward.</p><p></p><p>In order to head space a cartrige correctly you "must" remove the ejector first to prevent false</p><p>readings with the head space gauge.</p><p></p><p>If this is not done you could end up with excessive head space and high impact velocities with the</p><p>case head striking the bolt face.</p><p></p><p>I would have trouble believing that this is normal. The ejector hole is drilled deep enough to allow</p><p>the ejector to recede just below the bolt face but not far enough to allow it to much travel creating </p><p>a crater for the brass to flow into.</p><p></p><p>When re facing the bolt face you must check the plunger length to make sure it will retract enough.</p><p></p><p>So if you are getting a ejector mark that is bright(The case is shaved while extracting) there is</p><p>pressure from some problem because the brass should not extrude into the ejector hole with normal</p><p>pressures.</p><p></p><p>If there is a dimple in the case head then there is a good chance that the head space is to much or</p><p>the ejector is not set up correctly as long as pressure is not excessive. and shooting factory ammo</p><p>tells me that pressure is not the problem as long as everything else is correct.</p><p></p><p>Don't give up looking, because something is just not right. and just because it is a custom action</p><p>does not automatically rule out any possibility that there is not something wrong with it.</p><p></p><p>It is hard to trouble shoot a problem without actually looking at it (Kind of like when your wife</p><p>tells you the car is making a funny noise).</p><p></p><p>I hope some of this gives you some ideas.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 514946, member: 2736"] After all of the comments I would check out the ejector. It sounds like it is to long or the retaining slot is not long enough to let it move out of the way when the case comes backward. In order to head space a cartrige correctly you "must" remove the ejector first to prevent false readings with the head space gauge. If this is not done you could end up with excessive head space and high impact velocities with the case head striking the bolt face. I would have trouble believing that this is normal. The ejector hole is drilled deep enough to allow the ejector to recede just below the bolt face but not far enough to allow it to much travel creating a crater for the brass to flow into. When re facing the bolt face you must check the plunger length to make sure it will retract enough. So if you are getting a ejector mark that is bright(The case is shaved while extracting) there is pressure from some problem because the brass should not extrude into the ejector hole with normal pressures. If there is a dimple in the case head then there is a good chance that the head space is to much or the ejector is not set up correctly as long as pressure is not excessive. and shooting factory ammo tells me that pressure is not the problem as long as everything else is correct. Don't give up looking, because something is just not right. and just because it is a custom action does not automatically rule out any possibility that there is not something wrong with it. It is hard to trouble shoot a problem without actually looking at it (Kind of like when your wife tells you the car is making a funny noise). I hope some of this gives you some ideas. J E CUSTOM [/QUOTE]
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338 lapua pressure? HELP PLEASE
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