Telegraph codes varied by year/catalog. With Keith's rifle being a 1900 rifle, the 1900 catalog did list telegraph codes for the 30" 1899B in 303, and it's the same as in #15 - "Barb".

“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