I am looking for dimensions for the .460 G&A #2. The .460 G&A #2 is a rimmed cartridge, for double guns, based on the .50-140 Sharps or .50 Basic case. I would suppose it was written up in Guns and Ammo magazine like its’ sibling, the .460 G&A (#1). If you have the original write up, for the #2, I would like to see it.
The .460 G&A (#1) was written up in a 1971 issue of Guns and Ammo and that article turns up in a google search. It was base on the .404 Jefferies case necked up to .458 and blown out. Information on the less popular #2 version is harder to come by.