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I've put hundreds of rounds through my XD40 with my only hi-cap mag, trying to break it in. Went to the range Friday night to give it one more test (the previous range trip went off without a hitch), and I had 2 FTF's in 250 rounds! I was using only the hi-cap, and both FTF's were of the same variety--the round going into the chamber was fine, but the round below in the mag (always happens with rounds 11 and 12) was pushing up too hard and the thing (you know, the thing) that the rounds in the magazine push up against when the slide is in battery (what is that thing anyway) shaved the casing of the round in the mag creating a burr on the casing--enough to stop the forward motion of the slide. Keeping the muzzle pointed downrange I pressed the mag release button (had to push hard) and as soon as the mag popped out the slide closed, round in the chamber.
I know this is happening because the mag spring is too strong...but jeepers, how many cycles (loading, unloading) does it take to break it in? Can I cut a coil or two out of the spring?
I know this is happening because the mag spring is too strong...but jeepers, how many cycles (loading, unloading) does it take to break it in? Can I cut a coil or two out of the spring?