Nightcrawler
Member
P.P.S. The .276 Pederson was very close in size and performance to the 6.8 SPC.
Not exactly. The .276 Pedersen round was 7x51mm. That's the same case length and 0.62mm less bore diameter than a .308 round (with noticably more case taper). It's not anything that would fit into a current weapon built around the dimensions of the .223 round.
Ballistically, it was pretty much a rimless .30-30. It was a .276 caliber, one-hundred and fifty grain bullet, which wasn't exactly groundbreaking at the time. I don't really see that as being all that revolutionary.