Ran 17 round between 2 mags. Burned up the box if Fiochi. 10 round had 1 failure to feed and that was after the first shot, removed live round with screwdriver and then finished off the mag with no issues. Then ran 7 out of the 12 rd mag. No issues. Then ran the single that I pulled that jammed. No issue. I am thinking the mags springs are stiff and causing the problem. Then again when I drop the mag and try to let the slide load the jammed round it is at an awkward angle and does not full enter the barrel. Will keep it locked back and mags full for a few days.