Hmmm. I'm thinking "not".Couldn't one add a small amount of very fine saw dust to a charge and get the same results? The gasses given off buy the wood dust would burn before the carbon in the charcoal and create a hotter burn giving more complete combustion. Just a idea------
You can use either, though the vote normally goes to the FFg in calibers over .45.For shooting a .50 cal inline(209 ptimer), should I look for FFg or FFFg?