Originally Posted By: skeettx
Please look at BL1 and BL2 on the proof chart

https://www.vintageguns.co.uk/articles/proof-sizes/

http://www.hallowellco.com/bore_size_chart.htm

I can make out the original date code, that would
be of help

Mike



Right, and based on what Miller had mentioned I was making the assumption it had been honed (they are damascus) and reproofed at the larger 18.1 and 18.7mm diameters, so the 14/1 was a bit of a mystery.

Last edited by RARiddell; 11/22/18 03:59 PM.