Lil gun is a very hot powder and can excessively erode the forcing cone FA will not warranty their revolvers that are eroded from lil gun. I'd use H-110/296 if it were me.
Don't shoot it enough to really worry about eroding the forcing cone. I have been want to try H110 but just haven't gotten around to it. I killed a Wild Boar with the Lil'Gun load and it only walked a few steps and sunk to the ground and died. Boars have the tough shoulder plates that help to open the Heavy HP Bullets unlike Whitetail.
