Ian Skennertonicon asked me to look at some of my early No.1 MkVI and early No.4 rifles. This one surfaced, a 1931 Enfield with a 0.395 inch diameter counter bore, 0.585 inches deep. As the gun is almost new, I suspect it was used as a WWII test bed to determine accuracy following counterboring done to refurbish damaged muzzles.

Photos could be better but my photo studio is mid point in being totally revised.
Information
Warning: This is a relatively older thread
This discussion is older than 360 days. Some information contained in it may no longer be current.