I am showing a .666 at the muzzle. The barrels at the breech look small to me. I originally thought it must be 16ga, but the marking on the barrels does show 184. maybe 18.4. The sidelocks have the same stamp. The barrels look thin at the muzzle. Though I have a few dents in the barrels, but the muzzle is round, not elongated.
A 3/8 inch shouldered (don't try to use 3/8") deep well socket fits tight fit into the muzzle and it is measured, on the outside shows .664, so my caliper is correct, I did set it zeroed begin measuring.
I checked and the metric system was initiated in France in 1795.
A 3/8 inch shouldered (don't try to use 3/8") deep well socket fits tight fit into the muzzle and it is measured, on the outside shows .664, so my caliper is correct, I did set it zeroed begin measuring.
I checked and the metric system was initiated in France in 1795.