Original Danish M1867 Remington Rolling Block Military Rifle - Serial No 46399 Category_MG 42 Bolt & Barrel Assembly How can I determine the

How can I determine the shell size

The 3rd Marine Aircraft Wing was commissioned on November 10

and the following found on the top of the barrel:

Features include- smooth hexagonal 7

Raised date & lettering around outer border

Original Danish M1867 Remington Rolling Block Military Rifle - Serial No 46399 Category_MG 42 Bolt & Barrel Assembly How can I determine theOriginal Item: Only One Available. The Danes elected to license the Remington design for manufacture in Denmark at the Copenhagen arsenal, which they did in a fairly large quantity. The Danish model first utilized a rimfire cartridge and that stayed in service well into the smokeless era. However, with the adoption of the 8mm M1889 Krag Jorgensen the need to update or abandon the Remington became acute. In 1896 they were withdrawn from infantry