.
The barrel markings indicate that the barrel is a type 8 and was made between serials 1,250,000 and 2,000,000. That would be 1940 to 1954, which would be correct for a 1946 rifle. However, rifles of that period have a ramp front sight, no saddle ring, and and only one front barrel band. I have studied Winchesters long enough to know that one Never says Never. That is never say that Winchester never did something or made something. That is to say that that rifle may well be factory original.
