Took mine for the first time to the range. Gave her 8 cycles through my 3 magazines, so ~500 rounds.
Half were CCI JHP 36gr, half CCI Minimags FMJ 40gr
1 magazine came with the rifle, 2 additional for ISSC MK22.
One JHP failed to chamber, it was at the very beginning, so made us very concerned. Had to use a knife to get it, 75% in, out.
In total, 1 FTE, ~10 FTF (see below), 2 (live?) cartridges had to be scrapped
The rifle itself is quite accurate, groups are close, almost no recoil being felt ...
The magazines are crappy, their wells are not tight enough for 22LR cartridges, so they are getting positioned loosely (chaotically) and sometimes get just stuck causing FTF,
a good whack to the magazine usually can correct that, but sometimes needs partial reloading.
Magazine springs are too weak too?
My 2 cents.