Originally Posted By: L. Brown

Bartlett, is your recently reproofed gun (assuming 12ga) marked anything other than 18.5 mm, which is the current standard marking?


I have a few photographs of a sampling from my collection showing some with metric proof markings which range from 18.3 to 19.1 showing the decimal metric progression. I'm trying to figure out how this forum works for image posting. I'll add them when I do.

Jeremy