Had 2 FTExtracts in a row on a carbine AR.
Cleaned the shit out of the chamber after the first one thinking something got gummed up in there causing the case to get stuck and the extractor to rip off part of the rim. Shot it again last night, round fired, case stuck, 2nd case fed right into the rear of it. Exact same thing as before.
Went home and looked the rifle over. Extractor is fine, chamber got cleaned again and checked for machine marks/burrs, checked the buffer...nothing.
I put one of the rounds from the batch into the chamber on the upper and it had a little trouble going in the last little bit and didn't fall free. Tried this with a MK262 round and it fell out without much of a shake.
Measured the shoulder on some of the rounds I had made and they came in at 1.454, which is short. Not sure why. When I measured some Black Hills and MK262, the shoulder measured 1.4575 on both; .003 difference from my loaded rounds which I still don't know WHY they were 1.454 unless when I set up the die I started at 1.457 and had a moment and then decided to bump them down .003.
Anyways, would this be enough to cause this type of malfunction? When I slide the correctly sized 1.457 case in it drops free whereas the 1.454 has trouble.
Cleaned the shit out of the chamber after the first one thinking something got gummed up in there causing the case to get stuck and the extractor to rip off part of the rim. Shot it again last night, round fired, case stuck, 2nd case fed right into the rear of it. Exact same thing as before.
Went home and looked the rifle over. Extractor is fine, chamber got cleaned again and checked for machine marks/burrs, checked the buffer...nothing.
I put one of the rounds from the batch into the chamber on the upper and it had a little trouble going in the last little bit and didn't fall free. Tried this with a MK262 round and it fell out without much of a shake.
Measured the shoulder on some of the rounds I had made and they came in at 1.454, which is short. Not sure why. When I measured some Black Hills and MK262, the shoulder measured 1.4575 on both; .003 difference from my loaded rounds which I still don't know WHY they were 1.454 unless when I set up the die I started at 1.457 and had a moment and then decided to bump them down .003.
Anyways, would this be enough to cause this type of malfunction? When I slide the correctly sized 1.457 case in it drops free whereas the 1.454 has trouble.