If so have you pushed them a bit faster than recomended without trouble. Situation is this: I had a bunch of the 158 grain ds jacketed bullets loaded for my 357 revolver and they did 1000 fps and shot great. Now I traded the revolver for a 12" contender and quick load thinks I could be pushing about 1300 with the same load. Anyone with experience think I'll have trouble?? I've got 100 rounds of virgin loads to shoot up.