I picked up a few boxes of .45 for practice at a local gun shop, fired most of them over the weekend without a single incident. The following week I was going to a match and stopped at another store and picked up a couple of boxes. I cleaned my gun the night before the match and even buffed the feed ramp on the barrel. I loaded with the new ammo I had picked up the day before and my gun jammed on the first three sets of the match. I took the gun apart and the feed ramp looked like mud was stuck on it. I don't understand why the first batch was flawless and the second was a problem. Has anyone else experienced this problem. I finished the match with reloads a friend brought. I'm assuming I got a bad batch, but I won't use MagTech again, EVER!