Lewis Gun

[Paul S.]

I believe there was also a .303 Savage round too that had nothing to do with - and was in no way interchangeable with - the .303 British round, too. Used in one of the Savage lever action rifles (the Model 99, I think) and pretty much nothing else, as I understand it. Pretty sure it was produced from the mid-1890s until the 1930s or thereabouts.

Correct on both counts.