Just finished a total restoration on a Savage Model 99E, the stock was in very bad shape, and there was quite a bit of rust on the receiver, however the bore was in excellent shape, and the caliber was .308.
The Gun Trader Guide shows the price as a low of $457 to a high of $709 in the box, excellent condition shows $505. I would say $300 is a great buy. The stock was repairable and I retraced the pressed on checkering, looking at the photo you submitted it looks to be in excellent condition, jump on it.