Ran into something I thought might benefit someone who is interested in saving some money on brass for their .222. I had collected several thousand pieces of .223/ 5.56 brass before acquiring a Rem 788 chambered for the .222 Rem. and decided to form cases using the range pickup brass. I trimmed cases and used a form/ trim die to set the shoulders back and used a primer pocket swage on the crimped primer pockets of the military brass. What I failed to do was weigh sort the cases to check for varying volumes. This was a serious mistake! I ruptured a case while using the rifle to shoot prairie dogs in Colorado and was unable to remove the damaged/expanded case head from the bolt face until I got back home. Put the rifle out of action for the remainder of the hunt and upon removing the case I found the extractor had been damaged from the expanded case rim. I started weighing unprimed cases and found the weights of cases varied from 89 grains to 100 grains! Avoid problems by weigh sorting your converted brass and benefit from my stupidity.