Well, I wish I had paid more attention to you guys. Ran my second ever Action Pistol match at a local range last weekend. Got half way through my 3rd and final stage of the day when my gun jammed. Could not drop the mag, pull the slide back, or pull the trigger. Had to be smacked loose, then had to have a metal rod rammed up the barrel to pop out the stuck round. For what ever reason, that piece of brass was thicker at the base.
No damage to people or guns, so not horrible. Just embarrassing. I went home and checked every single other round I've made so far, and all fell effortlessly into the case guage. I brought home the offending round and confirmed that it did not fit into the gauge. So had I done what I was supposed to do, I would have known long before pulling the trigger. Lesson learned, I will check every round in the future.