It's possible that tempering them/heat treating them was so labor/time intensive that they only did it to the 250-3000 and 300 Savage receivers until 1924.
It's always seemed odd to me though.
In 1961, they charged an extra $5 for any 303/30-30/22HP between 90,000 and 900,000 they were converting to 250-3000 or 300 Savage to heat treat it. They no longer recognized a 266,000 cutoff.
“
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
