ligonierbill
New member
I have a Trapdoor, gift from my brother, that my notes say is a Model of 1884 made in 1891. Sorry, I would have to dig through my log to explain where I got this data. But I have always wondered about the British counterpart, the Martini-Henry, which is actually based on an American design. So I bought one. Don't have the rifle yet, but it is marked "1884". So these rifles are at least close to being contemporaries. I have also read that in developing the 45-70 to replace the 50-70, the US tested a variety of rounds, including the 577/450. The account I read said it exceeded the 45-70 in penetration of pine, the test the Army used, but they thought the recoil excessive. I imagine the initial testing used 405 grain bullets vs. the Brit's 480, so that would have affected the results. By the time my Trapdoor was made, the Army had gone to 45-70-500. So, my next project is to compare them. And my question is, what experience can you share that may help my quest?
I have on hand a fair supply of bullets, though I do need to slug the bore of the Martini-Henry. Also have 2Fg, 1 1/2Fg, and the discontinued Alliant Black MZ. I am used to modern BPRC cases not having room for the historic blackpowder charge, but I understand the 577/450 actually has excess capacity over the specified 85 grains, requiring some sort of filler. First thought is to use linen "tow", of which I have a good supply. Works for muzzleloader wading. I am also prepared to paper patch bullets. What do you think?
I have on hand a fair supply of bullets, though I do need to slug the bore of the Martini-Henry. Also have 2Fg, 1 1/2Fg, and the discontinued Alliant Black MZ. I am used to modern BPRC cases not having room for the historic blackpowder charge, but I understand the 577/450 actually has excess capacity over the specified 85 grains, requiring some sort of filler. First thought is to use linen "tow", of which I have a good supply. Works for muzzleloader wading. I am also prepared to paper patch bullets. What do you think?