The barrel address and left side barrel stamp letters look to be the same size on my 99H at 336,7xx.

The gunbroker rifle:

[Linked Image from p1.gunbroker.com]

[Linked Image from p1.gunbroker.com]

“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