Mike.The chamber cast dimensions were the same as those for the 10.5X47r in COW except for the cartridge base (.510" vs .513"), rim diameter (.595" vs .591"), and case length (1.77" vs 1.85"). I've never formed cartridges before. Will the 45-70 brass with a base of .500" be a problem when fired in the .510" base chamber?
So the 16/1 would be a smaller ball than 16. Therefore more number of balls to the pound and therefore a smaller diameter (Choke?) or is it the other way around?
You say that the form of the "V" is different than the one on you combination gun. It is also different than in my copy of the proof mark directory. However, I'm not sure what else it could be and would date the drilling to 1891.
A serial #380 seems low and would fit an early production gun but I don't know the serial number range for S&M guns. If they ceased business in 1901, does anyone know when Schlegelmilch and Metzner started business ?
Witten steel. There is a great reference, from this forum, for Witten steel by none other than a preceeding responder to this thread, Rainey. Reference #138418 from 3-2-2009. The Wikipedia reference states that Witten went bankrupt in 1881. After they were reorganized, it is said that they ceased making gun barrels. Witten steel is said to have been used by Schmidt and Habermann, Schuler, and Colt. Does anyone know of a Witten steel barrel dated past 1890 ?
Otto