My Loadbook with AA pressure tested data shows 11 grs. of AA#9 at 994 fps. in their 4 inch HS Precison test barrel. It generates 32,100 psi with the Speer 180 gr. GD bullet. Maximum pressure is 35,000 psi. E
hey does your info show at what grainage the pressure hits 35,000 ? just out of curiosity
My 2006 catalog lists 11.0 at 35,000 for 1019 fps.
I load my .40 and .357 SIG with Longshot. Loads are shown in the Hogdgon catalog. For the 180 gr. bullet they list a starting load of 6.5 gr. of Longshot for 1009 fps at 25,000 psi and 8.0 gr. for 1159 fps at 32,300 psi. I find the 6.5 gr. load works fine for me.
