No. The WSM stands for Winchester Short Magnum. They are not interchangeable.
Not even close.
If we are talking about a savage model 99 lever action rifle?Then your rifle was made by savage in 1946.
If we are talking about a savage model 99 chambered in 300 sav?Then your rifle was produced by savage in 1934.
If we are talking about a Savage model 99 rifle,chambered in 300 Sav. caliber,then your lever action rifle was produced in the year 1949 by Savage arms Company.
If the gun chambered in 300 savage caliber is a savage model 99 then the rifle was made in 1940 by savage arms company.
Your serial number indicates that your Savage model 99 rifle in 300 Savage caliber was made in the year 1947.
No. The 7.62x54R round is a rimmed cartridge, first developed in 1891 for use with the Mosin Nagant rifle. The .308 Winchester is derived from the .300 Savage, and has dimensions similar to - but not identical to - the 7.62x51 NATO cartridge, which is also derived from the .300 Savage.Additionally, the 7.62x54R actually has a bullet diameter of 7.92mm, vs. the 7.8mm (.308 inches) of the .308 Winchester and 7.62x51.Another stark difference between the two is that the .308 is not a rimmed cartridge, instead using a cannlure.
That would depend on the overall condition of your rifle,its age(by serial number) and what model of Savage rifle is chambered in 300 savage caliber.None of these questions were described in your question.
The term 300 mag usually refers to the .300 Holland and Holland magnum rifle cartridge.
If you have a Savage model 99 lever action rifle chambered in .300 Sav.caliber,then this rifle was made in the year 1951 with the serial number that you have provided.
You should contact Savage arms directly,they should identify the year of manufacture for your rifle.
Your Savage was made in the year 1937 if you have a model 99 lever action rifle.