Jack, the only available measure I have is what the barrels say:
16,8mm or 0.66141732"

Oddly enough, the left barrel is marked as having 1mm (16,8 - 15,8) constriction and the right one
only 0,1mm (16,8 - 16,7) , but the Galazan choke gauge would not go in.

Comments?

JC(AL)


"...it is always advisable to perceive clearly our ignorance."ť Charles Darwin