I’ve owned a few over the years that I felt were unfired or little used once they left the maker. Most doubles show drag marks on the face before the ring at the firing pin hole.
The breech face is of a Mullin 10 gauge that has seen little use.
Sorry for the bad picture.
I once bought a Griffin & Howe (circa 1923) in .400 Whelen with the original box of ammo. After G&H made and test fired it they blued the bolt and bolt face. The face had not the slightest mark and after chambering one round there was blue removal and brass left behind. I have shot it many times but taken care of it and it still looks nice but no longer unfired.
