Y1071 Steel Auxiliary Chamber for the .58 Union Repeating Gun or "Coffee Mill Gun"
Description: Here is a machined auxiliary chamber for the .58 Union Repeating Gun. A percussion cap would fit over the nipple on one end. The opening on the other end measures .590" in diameter and was meant to take a Johnston & Dow cartridge fitted with a William's bullet. Once loaded the auxiliary chambers were loaded into a hopper and fired.
Measures: D .973" L 2.872"
Reference: RBTRF Vol. 1. No 294