The Winchester I was going to use to neck down to .25-20 just folded...unusable. I got some other stuff from a guy in CA, Load-X, has some pretty malleable brass.
Every shot serves a purpose, whether accurate or inaccurate. It will always tell you what you did, and did not do, right. Even if all you have is a fraction of a second to make it, learn from it. So the next one is even better.