I'd go with the heavier BB wadcutter load over the 180 hp load.
Buffalo Bore Ammo 44 Special 200 Grain Hard Cast Wadcutter
A hot Special load of at least 200 grains, and at least 1000 fps.
Take advantage of using a revolver! Meplat is your friend. Use a wadcutter or SWC. Put a big flat face forward.