That twist will usually handle a short conical up to 350-385 grains. Some suggestions are
Buffalo Ballet 245s or 275s
Powerbelt 245s or 295s
CVA Deerslayer 300s
T/C Maxi Ball 320-350-370
Hornady Great Plains 385s
Some of these loads may require a wonder wad between powder & bullet

That twist also shoots tight-fitting short 44 cal sabot/bullets between 180-240 grains well. Some include

Hornady XTPs
Bear Claws
Partitions
Cheap Shots