I've had two slam fires in my last 100 rounds (two different outtings). Basically fires twice with a single trigger pull. The AR15 in question has fired roughly 1500 rounds total, with never a glitch.
I recently switched to CCI400 primers since I couldn't find any CCI450(magnum) primers. I've fired 300 of these, and the two slamfires were somewhere between shot 200 and 280.
The two slam fires were also with a new lot of FC brass, and I normally use PMC.
I'm attaching a picture of the two brass involved in this uncommanded double tap. The picture looks exactly like dozens I've seen on the internet. One's an "inny" and ones an "outty".
Any idea what's happening? I'm assuming sensitive primer, or possibly the brass is involved since those are the only variables. The AR15 lower function-checks just fine on the bench. My firing pin puts a pretty good ding in the primer when the bolt closes, just like others I've seen on the internet.
How unsafe is this condition? I still have 350 live rounds with these primers, and a box of 1400 unused primers.
curiously,
-edfardos
I recently switched to CCI400 primers since I couldn't find any CCI450(magnum) primers. I've fired 300 of these, and the two slamfires were somewhere between shot 200 and 280.
The two slam fires were also with a new lot of FC brass, and I normally use PMC.
I'm attaching a picture of the two brass involved in this uncommanded double tap. The picture looks exactly like dozens I've seen on the internet. One's an "inny" and ones an "outty".
Any idea what's happening? I'm assuming sensitive primer, or possibly the brass is involved since those are the only variables. The AR15 lower function-checks just fine on the bench. My firing pin puts a pretty good ding in the primer when the bolt closes, just like others I've seen on the internet.
How unsafe is this condition? I still have 350 live rounds with these primers, and a box of 1400 unused primers.
curiously,
-edfardos