Thanks for the great bio of Pedrson. I was totally unaware of most of it. I wonder if the fate of the Pederson rifle would have been different if the fluted chamber had been invented by that time. The Pederson 276 required waxed cases, but I understand the Garand 276s didn't.

The first rifle I know of with a fluted chamber was the Simonov Model 1936 (?). Is there some background to the fluted chamber that I don't know?

The 30-06 Garand certainly helped the logistics of WW II. However the 276 was ahead of its time as a medium powered round. It's case length, 51mm, is the same as the 7.62 NATO.