Here is a photo of the proof marks on the bottom of the barrels.



To clarify, here is what it all reads.

Crown over B, Crown over G
Crown over U
7,8mm
57
1133
15056

Then perpendicular to the above:

Crown over N
St.M.G.
15gr.

Again, the gun is built from a Belgian Mauser model 1889

The muzzle measures just over .320 across the valleys and .310 across the ridges.

Last edited by B. Dudley; 11/15/12 09:33 PM.
B.Dudley