My Savage 99EG in .300 Savage is from 1956 but did not ship from the warehouse until 1962 per letter from John Calahan. The lever boss code is from 1952 as receivers were made and then stored till complete assembly orders hit the factory floor. Mine is one of the most accurate rifles in my collection and kills deer right smart. My hand loads using RL-12 launch a 150 grain WWPP @ 2700 fps and groups under an inch at 100 yards. When it comes to hunting performance, there are no flies in the .300 Savage ointment what so ever.
Here's a photo of my four .300 Savages. My 99EG, 721 Remington from 1949, Rem 700 Classic from 2003, and my Rem 7600 pump from 2006 ( a limited run of 300 pcs).
358 Win