I have been all in a lather to find an affordable, early Marlin in .35 Remington when a barreled Krag action just about slapped me in the face. I realize that no .308-.310 boolit is going to have the swat factor of a .359-360, yet I am thinking that a design with a maximum meplat and weighing 220-230 grains and sailing out the muzzle of a Krag at north of 2,000 will still accomplish some very serious convincing on any member of the deer family it might encounter.
Said Krag is an 1898, built in 1903, so I am expecting a groove diameter in the neighborhood of .309, as bore specs got tighter on the Krags toward the end of manufacture.