I have recently bought a few 15 rnd clips, from Midwesthunters.com, for my 1911. Lots of problems. Every 3 or so rnds it would either jam, or the slide would lock halfway back, or a rnd would get stuck vertically sticking out of the ejection port. And once it double fed but luckily it jammed then too so I caught it before firing. I've fired with the same ammo many different times with the 10 and 7 rnd mags that I have, with no problems. I'm thinking either the spring is too week or the mag is to tight because when I loaded a few rnds into the mag, some of the brass got shaved off. I was just wondering if anyone else was having these troubles with the 15 rnd mag. And what would be a good way to fix it or should I just scrap the mags.