I just got back from camping across northern New Mexico and thought I could find some Goex or Swiss BP there. Well surely I can get some at Gander Mnt in Lubbock TX. So here I sit with a can of Pyrodex RS to get my little rolling block venture started. Can anyone tell me how much powder to use? Hogdon web site shows 60 grains for 45/70. Is this a weighed charge? Also do you compress it and what kind of primer? Also will be using HOLLOW base 405 bullet if this makes any difference. THANKS IN ADVANCE