How about use 460 Smith and Wesson pistol brass, and a 452 size bullet with BP or a moderate smokeless load?
It's already 1.8"
A 460 S&W would be a option in a single shot like a Ruger #1 or a T-C Encore one thing with a 452 bullets there is only one bullet that is available that is pointed for a higher ballistic coefficient....with a 458x1.8" there are at least 3 different pointed bullets available and are designed for higher velocity....I don't want anything moderate if there's a large farmland buck walking along the fence row 200 yards away I want to use the flattest shooting legal cartridge I can.
