7.62x39 and cmmg mk47
Quote from Reloader on May 4, 2018, 12:16 amSo I have started reloading for 7.62x39, I have doing 223, 308, 45, and 9 for a while now other than using Lee factory crimp to eliminate base bulge on pistol and a small base die for the ar's I have had zero issues. I got a cmmg mk47 and it has zero issues with factory stuff steel or brass but when I reload I get a bunch of rounds that jam up in the chamber, they aren't hard to get get out but they hang up. I used a small base rcbs die before I used the Dillon trim die. The rounds fit the Wilson case gauge perfectly. I'm probably .002-.003 under saami oal. I'm hoping someone has some experience with this with either a ar47 or the mk47, and I'm hoping there is some super simple fix I'm just over looking. I've pondering honing the chamber but I believe I would rather send it back to cmmg before I did that. It maybe it is just a bad chamber? I have read stuff that said that ak47 fired brass can be tough to reuse in an ar47 due to the chambers being tighter. But like I said it fits the Wilson gauge perfectly, falls in and falls out no issues, but then sticks when I try to cycle it thru the mk47, but factory brass or steel works fine. Any thoughts, I'm just looking for some help/advice. Also I did swap out the extractor spring for an enhanced one, perceptible difference
So I have started reloading for 7.62x39, I have doing 223, 308, 45, and 9 for a while now other than using Lee factory crimp to eliminate base bulge on pistol and a small base die for the ar's I have had zero issues. I got a cmmg mk47 and it has zero issues with factory stuff steel or brass but when I reload I get a bunch of rounds that jam up in the chamber, they aren't hard to get get out but they hang up. I used a small base rcbs die before I used the Dillon trim die. The rounds fit the Wilson case gauge perfectly. I'm probably .002-.003 under saami oal. I'm hoping someone has some experience with this with either a ar47 or the mk47, and I'm hoping there is some super simple fix I'm just over looking. I've pondering honing the chamber but I believe I would rather send it back to cmmg before I did that. It maybe it is just a bad chamber? I have read stuff that said that ak47 fired brass can be tough to reuse in an ar47 due to the chambers being tighter. But like I said it fits the Wilson gauge perfectly, falls in and falls out no issues, but then sticks when I try to cycle it thru the mk47, but factory brass or steel works fine. Any thoughts, I'm just looking for some help/advice. Also I did swap out the extractor spring for an enhanced one, perceptible difference