Ok a max charge for a lighter bullet and work up NOOOOOOOOOOOO!!!!!!!!!!
A max charge for the 158 maybe .I'd startat about 75% of a 158 load and see what you get .
The bullets maybe too hard or some wierd alloy (zinc)or a guy with one mold trying to get a 9mm wieght bullt out of a 357 mold ( I thought about trying it erred to safty I'll buy the lighter mold) .
I shot some 85 grain gold dots in my 357 may have been doing 2000 fps shot fine , were 355 dia for 380 acp .