Originally Posted by
DNW
I have had the same problem with my 10.5" LMT. It runs great non-stop with our duty ammo. We shoot a lighter less powerful frangible training ammo, and it has problems with that. Its starts by short-stroking and just failing to lock back o an empty mag, but after about 30-40 rounds will start failing to even strip a round off the mag. I end up having to run the charging handle every 2-3 rounds.
This also happens on our other guns, 14.5, 16 and 20" barrels, especially as they get dirty and dry. The failure rate with the frangible starts to go up, always fixed with a little lube to the bolt. The problem is just a lot more exaggerated with the 10.5".
I have wondered if putting a KX3 on the 10.5 would make it run better with the lower powered ammo?