IMR's SR4759 powder, with 405gr cast bullets will give 1200-1400 fps, which from my use, yields good accuracy in a Handi, and recoil that is not flinch inducing.
compared to shooting remington 305gr factory ammo, which is supposedly trapdoor pressure, the 4759 loads are pussycats.
the best part is that SR4759 is listed as reduced load powder in several other kicker calibers such as 25-06.