Yes, all the factory barrels would have the cartridge stamped on the left side in front of the receiver. There should also be a barrell address on top of the barrel about halfway down saying SAVAGE ARMS .. CHICOPEE FALLS .. etc.

You can see "300 SAV" right in front of the receiver on this early 1950's 99R.

[Linked Image from savagefest.net]


From 1946 to 1954, 300 SAV and 250-3000 were the only choices available in the Savage 99's. Anything with serial number from 500,000 to 770,000 will be one of those (and the handful of 800,000 serial number rifles that exist). From 900,000 on they could handle 243/308/358, then over 1,000,000 you start seeing 284's, then with serial numbers starting with a letter you eventually get 22-250, 7mm08 and 375.

PS: If you have an old fishing weight around, that can work for slugging the bore.

Last edited by Calhoun; 10/13/20.
“The Savage 99 Pocket Reference”.
All models and variations of 1895’s, 1899’s and 99’s covered.
Also dates, checkering, engraving.. Find at www.savagelevers.com