The current corral holds 3 revolvers in 32/20 WCF--1) S&W M&P x 5" 2) Colt Army Special x 5" 3) Colt Bisley Model x 4-3/4". I formerly owned a Colt PPS x 4" in 32/20, and sold it to a friend some years back.
The late Ken Waters in his "Pet Loads" columns listed 6.0 grains of SR-4756 under 115 grain lead bullets as his "Pet Load" for the 32/20 in revolvers. Out of an abundance of caution, I backed the PPS loads off to 5.5 grains with these bullet weights. Mr. Waters' loads shoot VERY well from my listed heavier-duty 32/20s, but I don't try to hot-rod the loads--I have a 30 Carbine Blackhawk and an SP-101 x 4.2" in 327 Federal for that class of stunt work. I designed a 32 revolver-specific bullet of 118 grains some years back with a radiused wide flatnose, and 6.0 x 4756 gives it right at 900 FPS. These shoot right to the sights for me at 25 yards, and have accounted for numerous jackrabbits over the years to 50+ yards. Coyotes have had the deep sagacity to avoid me at times I have had the 32/20 revolvers afield, so far.
With SR-4756 now out of print for a couple years, it behooves us 32/20 addicts to come up with a decent substitute fuel to keep the caliber singing. I use a lot of Herco powder in other calibers and gauges, and some early work with the stuff in 32/20 has shown some promise. Once I am able to get out and play again, I hope to nail down some good data for us to use.