I don't know about the caliber but your headstamp is a very early Frankfrod Arsenal headstamp. The numbers are the dates of manufacture. 5 84 will be May 1884.
Here is a link to another one that is similar.
http://www.acwbullets.com/Y835.htm
Nice find!
Doug
I was given about 40 or more of these same rounds, I was searching and found this forum. The R & F are the same but the dates are different. They do measure 53mm long. And are the exact measurements of my modern 45-70's. But mine are corroded and the primer has been used but the lead is still in the bullet. I thought that was kind of strange. Everyone is like that. Kind of like a misfire where the primer is struck but doesn't go off.
Does anybody know anything about these?
I was glad to find this forum with this topic.
A light strike can rupture the anvil inside the primer w/o detonating, and the round becomes useless at that point. The original 1873 Trapdoor Springfields were notorious for it. The Allen conversion took care of the problem.I was given about 40 or more of these same rounds, I was searching and found this forum. The R & F are the same but the dates are different. They do measure 53mm long. And are the exact measurements of my modern 45-70's. But mine are corroded and the primer has been used but the lead is still in the bullet. I thought that was kind of strange. Everyone is like that. Kind of like a misfire where the primer is struck but doesn't go off.
Does anybody know anything about these?
I was glad to find this forum with this topic.
A light strike can rupture the anvil inside the primer w/o detonating, and the round becomes useless at that point. The original 1873 Trapdoor Springfields were notorious for it. The Allen conversion took care of the problem.