The wife and I inherited a rough, old Model 40 in .250 Savage. I am going to refinish the stock and have my local smith slick it up a bit. The gun has a lot of sentimental value, for obvious reasons. So far, so good...

The problem is, the magazine is missing. Numrich's has the magazine for 3 or 4 rounds, and the magazine follower, but they are sold out of the magazine follower spring (!).

I have two questions. First, are the 3-round and 4-round box magazines interchangeable for my rifle? Second, any ideas about replacement springs? Anything else compatible out there?

Thanks.