As the title states, I have an original 3rd Model 1873 with a 20 inch barrel chambered in .44 WCF and made in 1885 by serial number. I have some dies, brass, and mold on order. Problem, the bore slugs at .462 caliber. Kind of at a loss here, any help or anyone that has had a similar problem. I have shot some factory .44-40 jacketed through it a few years ago and did notice that there wasn't much in the way of accuracy with it, but it was fun to shoot. Any suggestions would be greatly appreciated. Thank you.