What are you shooting? 38 super, 9mm, 40 cal? I am not overly impressed for the price of these "tuned" mags. I had some problems with cold weather and have not had time to shoot outdoors much lately. They seem to work well at the indoor range, but I am wondering if there are problems. I had one go salt shaker on me, but again, that was in cold weather.
I am using them for 9mm Major.