The S/N makes it an early 1948 model.. But the proof mark near the top of the barrel suggests to me that it might have been removed, possibly set back and/or rechambered.. Normally, those proof marks are directly across from each other on the LH side of the receiver.. With this one placed on top, I'd be very suspicious of the chambering.
The .300 WM wasn't manufactured until '63. IIWY, I would NOT fire that rifle until I had someone do a chamber cast to see what it really is..
Nice looking rifle though, for sure.. ..
Last edited by Redneck; 12/23/10.
