I used the same batch of Win 45 colt brass for about 15 years with heavy loads in a Ruger Blackhawk. It had oversized chambers and the base of the cases expanded and took a set so they wouldn't fit in my 45colt Seville.
I know you are not supposed to, but I annealed the cases down close to the head to size them down. I ran them through a 44amp die to reduce the bases, then expanded the mouths and fire formed. They worked fine for awhile, but they made me nervous so I scrapped that batch and switched to starline.