Had a disappointing day on the range last weekend. Mutt gun ran like a top with multiple types ammo: Wolf 55gr, PMC 55 gr, and SS109. Bushmaster wouldn't run for crap. Doesn't like the Wolf ammo, only shot PMC and SS109. Here's the problem:
It would fire one round, cycle the empty, reset hammer and "CLICK", would not pick up next round from magazine.
Used brand new USGI, green follower magazines, proofed in the other gun that DID run that day.
No weird wear marks, nothing out of place, etc,etc. I did notice a slight hesitation when hand cycling the bolt, about halfway through it's travel. Went home a switched the crappy/cheap four pos stock for a RRA six pos M4 stock and haven't had the chance to get back out to shoot yet.
Any suggestions?