The naked truth is if you have money they will build what ever you want. Case in point the .700 NE. The cartridge ego built it has no practical purpose except to say “I have the biggest”. The finely dressed help at H&H or other fine maker. Will be most attentive taking all your measurements and listing your preferences on your bespoke gun. Then after you have paid your deposit and left they will roll there eyes and make little inside comments about that “gosh gentleman”.
Bill