Awhile back I was looking for a Smokeless load for 500gr lead in 45-70.Had H4198 but no data for it.So after some research I came up with 41.0grs Varget,Win brass,CCI 200,Javelina lube, 50/50 pure lead and WW's.and OAL 2.790" Man what a blast! Shot 7 rounds out of a H&R Buffalo Classic at a junkyard, darn things went through metal like it was butter...Can't wait to get to range and check out groups from sandbags.