Lil’gun will be very hard on the forcing cone. Freedom Arms has released warnings about using it in revolvers. I have tried lots of powders and always got stellar 357 Mag performance out of Accurate No. 9 with jacketed and cast, and 2400 with cast.
H-110 can work, but since I tend to run 4” revolvers a lot, found No. 9 to be better for me speed wise.
Mark in GA
Odd.
H110 got the Ruger 357 Maximum scrapped from production.
For the OP.
Lil'Gun will give top velocities with low pressure in the .357.
Keep bullets on the heavy side.
Consult a Hodgdon manual and consult your chronograph thereafter.
