Well in zombabwe its easy to get .41 bullets, so a Game Warden who has the rifle can use some bullets for big game, and pistolbullets dor training and counter poacher duties.
I think it will be a specialiced round that the enthustiasts wil use , the ordinary guys will get a .375 or 415 and load wih heavier bullets.
-------------------- The world hasnt got enough big Bores ,and people who uses them