I have several .32-20s which see outdoor use here in West Virginia. Mostly use flatnosed cast bullets with 3.5 grains of Bullseye to approximate factory ammo for edible small game. I see no need whatever for heavy revolver loads over 1000 fps, mild loads have good penetration and enable you to eat right up to the bullet hole.
Here are some pics of mine. If you use the .32-20 please share what you use.
Accurate 31-105T is close approximation of factory bullets loaded in .32 Colt New Police and .32-20. Seat out long in rear crimp groove with 3 grains of Bullseye in .32 S&W Long brass to use in your .32 H&R Mag. Load 3.5 grains of Bullseye and crimp in front groove for .32-20.
I have found this factory approximation load shoots accurately in both rifles and revolvers. In Savage 23 bolt action about 1200 fps and routine 3-inch open sight 100 yard groups. Velocity 850 fps in.4" revolver and approaching 1000 fps in a 6" gun with tight cylnder gap.