If I were to add another rifle to my collection , strictly for the most dangerous game, it would be a .505 Gibbs.The Safari Classics from CZ is close in price to the .450 Rigby and it is a classic cartridge. Norma makes a 600gr PH load that should get a bull's attention.
I would prefer a .450 Rigby to my .458 Win. But Magnum Mauser actions are costly and my FN Browning circa 1959 is sweet and feeds flawlessly.
I and others have had issues with feeding in CZ 550 actions that were not polished and tuned by an expert.My .375 needed extensive work and would jam if cycled slowly(to minimize the noise in a hunting situation)with certain bullet shapes.It was so bad I traded it to a dealer.
