I am very much enjoying this thread. I have no interest in owning one, but your work is definitely way out there with regards to revisiting the past and breaking new ground at the same time, so I'm having a great time reading along. This ain't no doing an Ackley Improved of something followed by a great stomping up of dust! Good work, keep up the explorations.
Maybe you could lose the rim and go with the 50 BMG cartridge base as is next generation?
Model 600s in 308 Win and 6mm Rem, nuther one rebarreled to 22-250, matched pair of Model 660's in 6.5mm Rem Mag and 350 Rem Mag, NEED a 660 in 222.
