Anyone tested cases to see what exactly happens when the case mouths arent square?
I resized a bunch of 45-90 brass to 42 Wesson a couple weeks ago and forgot to anneal them. They all came out pretty square but it took a a couple firings to get them properly resized. today I resized a few more but annealed them first. Some came out with a pretty crooked mouth. Thot maybe this would be a good time to test a few to see the results. before I true them up.