You can load either FFG or FFFG, about 35-37 grns (Volume) depending on whether you use a drop tube. I like about 33 with a wonder wad, as it keeps it cleaner. FFFG makes hotter (faster) loads, though still safe, but FFG tends to be more accurate. I don't see any difference in fouling as long as you use bullets with pleanty of lube.