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I shot my first buck, in 1964, with a Savage 99 in .300 Savage.

The .308 Winchester/7.62x51 is a modified .300 Savage.

The Army thought the .300 would make a cartridge with near the power of the .30-06, in a more compact package.

In testing, they found the neck of the .300 Savage was too short for military use in semi-autos/full autos, so the increased the case length a bit and increased the neck length. Voila! the .308/7.62x51.

My understanding is the .223/5.56x45 is the result of similar experimentation with the .222 Remington magnum.

16 posted on 10/13/2018 6:54:10 AM PDT by marktwain (President Trump and his supporters are the Resistance. His opponents are the Reactionaries.)

I just looked and found that I have darn near a full box of the old Bronze Tip ammunition in .300 Savage. Damn shame I don’t have the rifle to go with it.

Fine old lever gun that 99. The rotary magazine was an interesting feature.