For FA's only! These loads are untested in any other firearm, and I don't promise they will work in your FA. Work up loads slowly.
16 Grains of VV N-110, Leadhead's 270grain cast bullet, Starline brass & Federal 155 Magnum primers will give you 1,370 fps.
Substitute 16 Grains of IMR-4227, and you'll be just under 1,100 fps.
Both loads are very accurate in their respectiev revolvers. The IMR load shot the first Revolver 40 in the state of Ohio a few years ago.
Steve W.