Well our artillery unit has been using FA powder instead of FG. I guess FA is what is used in the making of fireworks, same as blasting powder. We pay $2.16 TO 2.90 PER lb of FFA(2FA) or FFFFA(4FA) in a 50lb bulk bag/box. 2FG or 3FG is $6 per lb in a 25 lb case of 1lb cans, this is from Redmans in Ill. they can be found through the "stickey" info for black powder,(elephant and then who ever comes up under dealers). The Camp Chase Gaszette had an add for The Main Powder House
www.mainpowderhouse.com that when I checked their site had $8.50 including shipping don't know how many or how much one must purchase to get that price.
If shooting compettion I would use FG powder but just for fun shooting use the cheaper FG powder.
FRED.....................................