Does it shoot a Black Powder cartridge? Is it a specialized brass case that is hard to get your hands on?
I love the old lever guns especially the ones with the octagon barrel. cool gun to keep in the family!
The common name is a 38-40 which is a misnomer as it actually takes a .40 caliber bullet. Ballistics wise, it's identical to the 40 S&W.
Cool rifle, my dad has an 1888 38-40 in his gun safe that I've shot a few times, very accurate old rifles.