loose powder math refrashing

[corey012778]

ok I need some refrashment on strength of powders.

right now, I am using pyrodex p which is fffg but I am getting some pyrodex rs when wally world clear outs BP stuff.

fffg is 15% stronger the ffg. Am I remembering right, those 85 grs of fffg = 100grs of ffg

remember ppl, there are not dumb ??? just ppl being dumb not asking.

[cayugad]

sounds about right to me

[dmurphy317]

Thats the ratio I've always used. BTW, in my testing I have found that Pyro p (3F) gives similar velocities to 777 2F in the 80 to 110 grain loadings volumn to volumn.