I can get more power out of hand loaded 9mm than I can from 357Sig.
How did you handload to get more power out of a 9mm than .357 Sig?
I mean Doubletap ammo does give 125gr JHPs at 1450+.
3.5" barrel - 1415fps
4.5" barrel - 1525fps
Are you saying you handload your 9mm past that?