hey round ball you follow me everywere, what's up? could have answer for ya i also have a 12 ga, single shot Traditions. I use a charge of 70 grains 2fg goex and a .0125 thick linnen patch lubed with t/c bore butter and a .715 round ball, this is the only ml that I use a short starter with, one tap and it slides down nice and smooth, cap it of with a cci mag and it put 3 rounds off hand into 50 yards into a 3-4" groups depending on how much recoil my shoulder can handle, bear in mind this thing weighs 5 1/2 lbs. and really packs a punch, I have never as of yet used a wad but one day will try it I haven't used 1fg yet but bet recoil should drop some, if your smooth bore is a SXS yu can also try a winchester wad and a .69 ball goes down like one of them sabot and works too, just have fun with it and be safe. kjg