I would not hotrod loads in the smith, the guys that write the load books no more about it than you and I. If I had a 625 and messed it up I'd cry. I had a ruger blackhawk 45 l.c. several years ago and made some hot loads for it, the cases are not strong enough to hold up very long under that sort of pressure and therefore shortens case life, same goes for hotrodding marlin 45-70