I have a Husky 1867, that I had not fooled with much for a year or more. It came sporterized, and I refinished the metal, and the wood, and put some decent sights on it. I had tried the Lee .450 gr slug for a .500 smith that I cast, and tried a Lyman .50 plains bullet, 390 grains. No consistency for either bullet, and they bot seemed big enough. Well today I was casting some Lee .515, 500grain slugs out of 1/2 wheel weights/pure lead, for my 50/70 Trapdoor. I had made about 500 up, and decided to load some up, with 12grs of Unique,to try on the 12.7 Husky. I made a dummy round, breech block woud not close, and the bullet was in as far as it should go. I remembered that I had mistakenly trimmed some about .100 of an inch too short. I dug them out and primed, powdered, and seated some of the 500gr slugs, in the crimping ring, with the 12gr of Unique. I went out to the car port and elbowed up on my Rav 4, and picked a bar spot on a steep bank where I could not get ricochet's, and picked out a white rock about 2" around, stood out on the red clay bank. I have a tall ft sight and had raised the rear peep up quite a bit, when shooting it the other day. At the same spot, it was all over the place, 3 feet groups if that. I held on the rock, and hit about 4" over it. So I held the same place for 2 more shots, and they went in the same place, I meant exactly the same place. I got on my 4 wheeler and drove over, and with a tap measure, the hole diameter, was 1-3/4 inches, at 140 yds. I was pretty well good to go with that group, came and loaded 3 more up, held on the same place, and just kept on stacking them. I am tickled pink with this load. This rifle is supposed to have the barrel that is from a old ML, I do know the rifling is Hexagonal, like a Whitworth, with a fast twist, probably about 1-30 or faster. This would make a great deer hunting rifle, 150 yds in would be a cake walk. Anyway, just thought I would share.