Any more develop on this project Tony?
BTW, Ive got a 325 (1947-49, mods made it A,B,or C), so I think I can think of a straight 325 as a '1947ish' pretty legit.
Pretty cool old rifle for what was an inexpensive one in its day. The butterknife bolt handle harkens to the Mannlicher, the somewhat pregnant stock around the detachable box magazine to some British sporters.
This is not your typical 30-30; cast bullet loads from 32-20 equiv. on up to the 170 or even the Savage 303's 190 gr. bullets, or any jacketed bullets including spitzers and a reputation for accuracy too.
BTW, the bolt has one locking lug and the bolt acts as a lug, these are not a high pressure action (dont magnumize loads for one). That said, with todays powders and seating a heavier spitzer you can get quite improved performance over a regular 30-30 RN cartridge. I've recently read an article that concluded having the bullet base intrude below the case neck is not detrimental to accuracy, only powder capacity, so by choosing the right powder you can still make it go.
For a varmint load Ive used the .308 110JSP at about 2000fps, OAL 2.505) to emulate the 30Carbine (or even'+P') and it is a dandy out to 100yd., but as it is an open sight rifle that is my limit anyway.