32 sw 85 gn lead bullet definitely will “bounce” off and come back at you.M'kay.
Idk how big the barrel cylinder gap on your H&R is, nor the throat diameters, but if it's larger than normal and in combination with the long jump and low pressure .32 S&W, that all can add up to velocity loss.
My belief is the. 32 S&W can be an effective, bare minimum option when shot from a revolver chambered ONLY for the short .32 S&W.
I have the same revolver as you. So, I tell ya what, since I'm a curious bastard I'll load up some .32 S&W and shoot it over my chrony and see just what the velocity is.
My gut tells me 600 fps and I think in a .32 short revolver it would be 700 fps.
Maybe not off a rotted tree but it can/will have the potential.
PPU 85gn out of my 1890s SW lemon squeezer just hit 500 ftps