My feeling is this "39 bore" was actually chambered for .577 Snider. I'll ask the owner for additional details on the chamber. (ok, I'm chasing gun history)
Parent cartridge .577 Snider
Bullet diameter .455 in (11.6 mm)
Neck diameter .487 in (12.4 mm)
Shoulder diameter .628 in (16.0 mm)
Base diameter .668 in (17.0 mm)
Rim diameter .746 in (18.9 mm)
Rim thickness .06 in (1.5 mm)
Case length 2.34 in (59 mm)
Overall length 3.12 in (79 mm)
I just don't know how the bore was measured on a rifle in 1875.... Any insights?
Last edited by Argo44; 02/06/20 09:49 PM.
