Since the CZ 550 magnum size action can be chambered for super magnum cartridges some of these cartridges where tested (see.585 Gehringer) or where specially designed (see.600 Overkill) with and for this action.
Since the CZ 550 magnum size action can be chambered for super magnum cartridges. Some elephant gun wildcat cartridges where tested (see.585 Gehringer) or where specially designed (see.600 Overkill) with and for this action.