Buried deep in my stash I found this old brass. The unmarked cases are berdan primed. The UMC cases are boxer. Im not sure what they are. Except for length, they are about the same. What do you think?
Length: umarked are 2.250", UMC are 2.300"
Rim: .635"
Rim thickness: .085"
Base: .518"
Shoulder: .515"
Neck: .463"