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Rifles, Reloading, Optics, Equipment
Gunsmithing
Rem 700 Primary Extraction RR serial #
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<blockquote data-quote="jrock" data-source="post: 1991765" data-attributes="member: 78569"><p>The brass is ADG and the load is a full 1.5 grains lower than Berger's max. Chrony is reading 50 fps lower than Berger's max. Before the chamber was polished, firing virgin brass gave soft ejector marks at random on an order of 1 every 3 cases. After the chamber was polished, second firing with 0.002" bump with FL die, the same powder charge gave consistent ejector marks on 8 out of 10 cases. Case length is good along with COAL at 10 thou jump. Seems like a pressure issue at the core of it. I'm not sure the chamber isn't at fault some how.</p><p></p><p>Before polishing, the gloss on the brass was taken away with the first firing. There was some texture but no scratches, dents or the like. After chamber polishing, the second fired cases have a shine, but I can still see some texture...maybe from the first firing? I bore scoped it and didn't see any glaring defects. Maybe the sand paper job in the chamber was a bit too aggressive??</p><p></p><p>The issue does seem to be getting worse as time goes on. I did a complete clean of the barrel and action with no improvement. To me, it sounds like the load should be reworked. Not sure if the barrel "sped up" and now has more pressure with the same charge?? I'm not sure that is what "speeding up" means. </p><p></p><p>About 8 years ago, I bought a new rem 700 and it had the same issue with factory ammo with every shot sticking. Sent it back to them and they sent me a whole new barreled action. I wish I knew what they found to warrant such a major fix. My other guns can withstand a very hard bolt lift with bright ejector mark and the cases still extracts. Could the chamber be messed up some how? Too much head space, not enough web support, too rough...or maybe its just the reloads as factory ammo seems to work fine....if some can be located right now. </p><p></p><p>Appreciate the input</p></blockquote><p></p>
[QUOTE="jrock, post: 1991765, member: 78569"] The brass is ADG and the load is a full 1.5 grains lower than Berger's max. Chrony is reading 50 fps lower than Berger's max. Before the chamber was polished, firing virgin brass gave soft ejector marks at random on an order of 1 every 3 cases. After the chamber was polished, second firing with 0.002" bump with FL die, the same powder charge gave consistent ejector marks on 8 out of 10 cases. Case length is good along with COAL at 10 thou jump. Seems like a pressure issue at the core of it. I'm not sure the chamber isn't at fault some how. Before polishing, the gloss on the brass was taken away with the first firing. There was some texture but no scratches, dents or the like. After chamber polishing, the second fired cases have a shine, but I can still see some texture...maybe from the first firing? I bore scoped it and didn't see any glaring defects. Maybe the sand paper job in the chamber was a bit too aggressive?? The issue does seem to be getting worse as time goes on. I did a complete clean of the barrel and action with no improvement. To me, it sounds like the load should be reworked. Not sure if the barrel "sped up" and now has more pressure with the same charge?? I'm not sure that is what "speeding up" means. About 8 years ago, I bought a new rem 700 and it had the same issue with factory ammo with every shot sticking. Sent it back to them and they sent me a whole new barreled action. I wish I knew what they found to warrant such a major fix. My other guns can withstand a very hard bolt lift with bright ejector mark and the cases still extracts. Could the chamber be messed up some how? Too much head space, not enough web support, too rough...or maybe its just the reloads as factory ammo seems to work fine....if some can be located right now. Appreciate the input [/QUOTE]
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Rem 700 Primary Extraction RR serial #
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