I have some 6mm Cases that have been loaded 25 times, and some old 244 cases that are on their 20th reload. These have all been fired in a minimum size chamber and neck sized. None have been used for "hot" loads. If I have a warmish load that shoots well, I will use the brass for 4-5 reloads and then retire it. I refuse to trim more than 4 times, since that is an indicator of brass stretch, the extra has to come from somewhere, i.e. some place else in the case, possibly just ahead of the Web. Regards, Eagleye.