Robert, no just a slight misread of what I meant. I was refering to a gun marked 13/1 with being out at over .729". A gun marked 12 would be .729" to .740" and out at anything over .740". A 12 bore chambered gun could be proofed as 14 bore or even 11 bore on the proof marks. The markings are to indicate what the gun measured at time of testing and would then indicate if any ammount of metal had been removed beyond the tested limits. If out of proof from its original measurments it would need re testing by the proof house and re stamping by them before it could be offered for sale here in Britan. Therefore your .732" L.C.Smith would have been stamped at 12 or .729" under the 1954 rules of proof indicating that at the time of testing it measured between .729 and .740. Lagopus.....
