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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
AR 10 DPMS feeding issues
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<blockquote data-quote="rpol98" data-source="post: 2541931" data-attributes="member: 122310"><p>had a similar story with a 6.5CM AR-10. built it a while back, was working fine with several types of ammo, no mis-feeds, everything was hunky-dory, very reliable, shooting is fun. Got some S&B 140gr FMJ, and immediately got 10% failure to feed. tried 4 different mags, same occurrences. I think it has something to do with the bullet shape, the S&B projectile isn't as pointy as what I've been using (ogive?). Well, because ammo availability is limited, I bought a lot of the S&B, so I have to make it work.</p><p>I saw the pics in this thread earlier, about tweaking the mag feed lips, so I tried that on 2 metal mags. Went to the range this weekend, the first tweaked mag worked great. Tried the 2nd tweaked mag, the misfeeds are worse, like every other round. So now I need to compare the good mag with the mag that got worse, and figure out what the differences are. Might actually have to figure out how to get some relevant measurements on the feed lips.</p><p>At least I ended with 1 good mag that's reliable. I suspect the bad mag that went worse, I might have been over enthusiastic in the tweaking.</p></blockquote><p></p>
[QUOTE="rpol98, post: 2541931, member: 122310"] had a similar story with a 6.5CM AR-10. built it a while back, was working fine with several types of ammo, no mis-feeds, everything was hunky-dory, very reliable, shooting is fun. Got some S&B 140gr FMJ, and immediately got 10% failure to feed. tried 4 different mags, same occurrences. I think it has something to do with the bullet shape, the S&B projectile isn't as pointy as what I've been using (ogive?). Well, because ammo availability is limited, I bought a lot of the S&B, so I have to make it work. I saw the pics in this thread earlier, about tweaking the mag feed lips, so I tried that on 2 metal mags. Went to the range this weekend, the first tweaked mag worked great. Tried the 2nd tweaked mag, the misfeeds are worse, like every other round. So now I need to compare the good mag with the mag that got worse, and figure out what the differences are. Might actually have to figure out how to get some relevant measurements on the feed lips. At least I ended with 1 good mag that's reliable. I suspect the bad mag that went worse, I might have been over enthusiastic in the tweaking. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
AR 10 DPMS feeding issues
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