Thanks everyone for your help. Sounds like 70 grains just may be the ticket.

"I shoot them out of my Staghorn also. Try some cornmeal under them. You might be able to bump the powder charge. I actually shoot them with 80 grains of Pyrodex RS and get real good accuracy. What lube are you shooting?"

I will give the corn meal a try next time at the range.The grooves have lube in them i did not know that i am supposed to use additional lube. What lube do you use and howdo you use it? With 70 grains of powder, the couple of three shot groups i fired at fifty yardshad the holesalmost touching. The Ft. Sill pig season is coming up and i would like to use the 370 grain Maxi Ball at a stand that is near a pond. Max shot would be 75 yards.