ffg or fffg powder
I have 3 bp guns 1 is a cva hunterbolt 54 cal , 1 is 50 cal cva optima pro & 1 is a walker 44 cal pistol. I have been using pyrodex select ffg in rifles & t7 fffg in pistol , can i use the 3f in all guns & if so do you have to change grains of powder to do it ?