The Famous Grouse
New member
OK, yesterday was the first trip to the range with the new AR platform. Overall, I'm pretty pleased with the Mossberg MMR Hunter, I got groups of just over an inch despite the miserable factory trigger with its gravel road feel and 2.3 miles of creep. A new trigger is already on order...
I got her on paper with some economy handloads, but I had two observations/issues.
1. There is a pronounced kaa-pooinggggg after I fire each round. Obviously this is the buffer/recoil spring, but the vibration after each round fired can be felt/heard through the stock for a couple of seconds after the round is fired.
Is this normal for the viberations to be this pronounced and to continue for this long? Is there a fix for this?
2. The range session was abruptly ended by a round that didn't fire and remained stuck in the chamber. And, of course, my cleaning rod didn't make it back in the range kit. I tried lowering the bolt serveral more times including letting it slam home quite forcefully. It wouldn't fire.
After removing it easily with a cleaning rod back at the ranch, I noticed the primer was not even dented. I was expecting a slightly dented primer, or one that was fully struck and just didn't go off. The primer is properly seated, nothing out of the ordinary.
I stripped the rifle down and fully cleaned it, inspecting the firing pin. Everything is functioning fine. I confirmed it by firing two primed cases.
What gives?
Many thanks.
Grouse
I got her on paper with some economy handloads, but I had two observations/issues.
1. There is a pronounced kaa-pooinggggg after I fire each round. Obviously this is the buffer/recoil spring, but the vibration after each round fired can be felt/heard through the stock for a couple of seconds after the round is fired.
Is this normal for the viberations to be this pronounced and to continue for this long? Is there a fix for this?
2. The range session was abruptly ended by a round that didn't fire and remained stuck in the chamber. And, of course, my cleaning rod didn't make it back in the range kit. I tried lowering the bolt serveral more times including letting it slam home quite forcefully. It wouldn't fire.
After removing it easily with a cleaning rod back at the ranch, I noticed the primer was not even dented. I was expecting a slightly dented primer, or one that was fully struck and just didn't go off. The primer is properly seated, nothing out of the ordinary.
I stripped the rifle down and fully cleaned it, inspecting the firing pin. Everything is functioning fine. I confirmed it by firing two primed cases.
What gives?
Many thanks.
Grouse