Is the ‘48 a clover leaf tang? When did that change?
I have a 375 made 1952. Love to get another stock for it, mines a bit worse for wear!
Ensure you bed it properly and keep the action screws tight!
Good questions and advice on the bedding and action screws. Yes, the 1948 is most times a clover leaf tang. However, it is a transition, so there is a possibility that a very late '48 model may not have the clover leaf tang or a smaller transition style safety lever. The ones made in 1948 that I have had were in fact clover leaf tang specimens. Here's one the OP would probably love to have:
Now, if the op's rifle does not have a clover leaf tang that would make it much easier to find a stock. The rarity of that stock makes it worth a lot of money. Like I said, just the stock alone in excellent condition could bring $600 by itself. Here is what the clover leaf tang looks like:
This was a 375 H&H that I bought a couple years ago, but was rechambered to 375 WBY. It's a shame too because other than that, the rifle was completely original. Notice the rear bridge isn't even drilled and tapped.