Back in the day, it seems to have been classed with the .300 Westley Richards Sherwood ( AKA .300 Extra Long when made by B.S.A. ) and the .298 Minex as a target/light game number rather than a Rook and Rabbit cartridge.

For Vintage Rook Rifle events I classify it (and the .32/20) as acceptable as a Rook and Rabbit calibre, but some purists could well disagree.

Greener’s 84 grain hollow point load at 1050 fps was ballistically almost identical to the .300 or .295 Rook cartridge.

As you say the .310 is very similar to the .32/20 both in ballistics and in how it was put to use. Neither would be considered a deer rifle today, but Great-Grandpappy harvested his venison with both.

Last edited by Parabola; 12/18/22 04:07 PM.