Was counter-boring an 03 barrel EVER legitimate rework/repair standard?
Reason I ask is the 1926 03 I bought (with a 1-30 barrel. Likely a Nat'l match rifle kept in service) has a counter-bored barrel - about 1/2" deep. Crown is standard.
This is an ex-Viet Nam rifle (an Aussie entrepreneur exported MANY M1903's, 03A3's, M1911A1's, trench shotguns and Model 1917's out of Viet Nam to Australia in the 1980's/90's), in better than usual condition. The Communist Vietnamese did not keep the 1903 and M17's in service post-1975 and they went into storage, so highly unlikely the Commies did the counter-bore.