Actually I think the time line was something like this. Winchester was making the Model 71 chambered for .348 Winchester. These rifles are very well made...and have since gained something of a " cult status" . Then sometime in the 1950' s, (I believe Winchester introduced the Model 88 - a lever - and the Model 100 - a semiauto. Both of these rifles had rotating locking bolts actuated by the lever or semiauto action. At that time one of the cartridges introduced to compliment the new action, (and replace the Md 71 .348, was the .358 Winchester). The older .348 Winchester had a tapered case wall, shallow shoulder, and a very pronounced rim. The new .358 Winchester (which was actually just a .308 Winchester necked to .358) was a rimless cartridge. It was also smaller in capacity than the .348 Winchester. But ballistics were improved over the older .348 by higher operating pressures of the .358, and it could use pointed bullets. (Both the 88 and the 100 had box magazines not tubes.) Both of these rifles have also long since been discontinued and themselves have gone on the achieve something of a " cult following" . Back in the late 70' s and early 80' s Winchester was looking to " Spruce Up" their 94 and thus developed the 94 Big Bore. It was originally chambered in only .375 Winchester and was several years later that the .307 Winchester and .356 Winchester were announced simultaneously. Essentially the .307 is a Rimmed version of the .308 Winchester and the .356 Winchester a rimmed version of the .358 Winchester. (Marlin shortly thereafter announced and chambered for both cartridges....though discontinued production of both calibers prior to Winchester' s discontinuance.) The .307 and .356 operate at pressures slightly less than their rimless counterparts...but at significantly greater pressures than older cartridges such as the .30-30 or .35 Remington. Not only are the .307 and .356 Rimmed but the case walls are significantly " thicker" than the case walls of the .308 and .358 Winchester. This was done to assist the beefed up 94 Big Bore in containing the pressures with a margin of safety. Winchester also specifically designed the .307 and .356 cases with a rim to assure reliable feeding and functioning in the Model 94.

Essentially the .307 Winchester will do anything the .300 Savage will do....except in a traditional styled 94. And the .356 comes within 100-150 fps of the .358 Winchester. They are both excellent game cartridges for anything resembling reasonable ranges. (They are not however " Long Range wonders" .) Both can still be found on the used gun market...and if you are willing to reload you can undoubtedly continue shooting these for the rest of your life!

P.S. Before I tried rechambering...I' d look for a good used one!