I took the double barrel .12 ga MLer out and shot it with rd balls yesterday. I only had 25 yds to shoot at, but here is a pic of the group. It is 4 shots (2 from each barrel). Load was 100 grs. of Pyrodex RS, a thick overpowder wad (that is glued to a 1/2" fiber cushion wad before lubing so there is just one wad to mess with instead of two seperate steps). The a .690 rd ball was patched with JoAnn #40 Drill cloth lubed with Crisco and cut at the muzzle. I picked up the fired patches and they still had lube on them and were good to go again as a pre-cut. That .690 rd ball weighs 1 1/8 oz. That should make a Grizz stopper, and two fast shots. I checked the load in the second barrel to make sure it was still seated after firing the first barrel, and it hadn't moved. Anyway, check out the group. It isn't the best group i have fired with rd balls, but not bad.All shots are touching and about 2"-2 1/2" above point of aim. Should be about on at 50 yds. Wish i had 50 yds where i could try it.