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The Range
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<blockquote data-quote="dennishoddy" data-source="post: 2905108" data-attributes="member: 5412"><p>For whatever reason, have never been a fan of the 7.62X39 in anything. Glad you tried it and I don't have to.</p><p>The .243 WSSM hasn't been 100% reliable on feeding either. It all depends on the mag position, its a little loose in the mag well. If I put a little forward pressure on it to tilt it upward, its 100%. The 5 round mag is fine, the 10 rounder is the issue, so at least I know its mag related.</p><p>Edit: Been doing some research. My .243WSSM upper came from Accuracy systems about this time. My brass gets pretty beat up when fired. Fortunately I have Close to 500 rounds of brass. New Followers seem to fix the failure to feed issues.</p><p>Copied from Predator Masters:</p><p></p><p>Skinney, The folks at Accuracy Systems are good folks, but they don't do very many of the WSSM's. This problem that you are showing is typical in a couple of different situations: 1) The bottom bolt-lugs have not had the edge rounded. 2) The magazine either has not been modified correctly, or the magazine was not allowed to hang freely in the magazine well. 3) The geometry of how the magazine is held in the lower receiver is out of spec.</p><p></p><p>The back side of the two bottom bolt-lugs needing to have a radius on them is something that I learned the hard way back about 1000 WSSM uppers ago. The neck to shoulder ratio, coupled with the massive bolt, makes this unique to the WSSM line.</p><p></p><p>The modification to the magazine is another point. If the magazine-catch slot is not raised enough, you will get marks on your brass. Keep in mind that most of what folks are purchasing in the WSSM line is just an upper receiver. I RARELY even see the lower receiver that the upper that I build and test is going to be used on. It is not unheard of for a customer lower to be out of spec enough that I have to make magazines especially for that lower.</p><p></p><p>Bottom line: Your friend should not have had to do anything to the bolt or magazine. I'm sure I have had a bolt slip out of the shop that didn't get the radius put on the bolt-lugs, but I know it's at least a 1000 to 1 chance that it will happen. The WSSM uppers run great, shoot great, and out of all of the uppers that I have produced over the years, I have yet to have my first barrel washed out. There are many myths that follow the WSSM line, both from a bolt-action and the AR-15. Where I would starve to death building custom bolt-action rifles chambered in the WSSM line, I do a good business building AR-15's chambered in the same line.</p></blockquote><p></p>
[QUOTE="dennishoddy, post: 2905108, member: 5412"] For whatever reason, have never been a fan of the 7.62X39 in anything. Glad you tried it and I don't have to. The .243 WSSM hasn't been 100% reliable on feeding either. It all depends on the mag position, its a little loose in the mag well. If I put a little forward pressure on it to tilt it upward, its 100%. The 5 round mag is fine, the 10 rounder is the issue, so at least I know its mag related. Edit: Been doing some research. My .243WSSM upper came from Accuracy systems about this time. My brass gets pretty beat up when fired. Fortunately I have Close to 500 rounds of brass. New Followers seem to fix the failure to feed issues. Copied from Predator Masters: Skinney, The folks at Accuracy Systems are good folks, but they don't do very many of the WSSM's. This problem that you are showing is typical in a couple of different situations: 1) The bottom bolt-lugs have not had the edge rounded. 2) The magazine either has not been modified correctly, or the magazine was not allowed to hang freely in the magazine well. 3) The geometry of how the magazine is held in the lower receiver is out of spec. The back side of the two bottom bolt-lugs needing to have a radius on them is something that I learned the hard way back about 1000 WSSM uppers ago. The neck to shoulder ratio, coupled with the massive bolt, makes this unique to the WSSM line. The modification to the magazine is another point. If the magazine-catch slot is not raised enough, you will get marks on your brass. Keep in mind that most of what folks are purchasing in the WSSM line is just an upper receiver. I RARELY even see the lower receiver that the upper that I build and test is going to be used on. It is not unheard of for a customer lower to be out of spec enough that I have to make magazines especially for that lower. Bottom line: Your friend should not have had to do anything to the bolt or magazine. I'm sure I have had a bolt slip out of the shop that didn't get the radius put on the bolt-lugs, but I know it's at least a 1000 to 1 chance that it will happen. The WSSM uppers run great, shoot great, and out of all of the uppers that I have produced over the years, I have yet to have my first barrel washed out. There are many myths that follow the WSSM line, both from a bolt-action and the AR-15. Where I would starve to death building custom bolt-action rifles chambered in the WSSM line, I do a good business building AR-15's chambered in the same line. [/QUOTE]
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