Is it known with absolute certainty that a year stamped on the barrel always indicates the year of barrel installation or, alternatively, that bodies might never be originally mated to barrels two or three years apart ? Further, if a rifle is rebarreled should that not warrant a date stamp on the left cheek? The only reason I ask is that I have a 1916 Mk III (ie 1916 on right cheek), built on a Mk I receiver, with E.Rex proofs on barrel and body, perfectly matching fonts, as well as '18 stamped on the barrel.

Ridolpho