Seems to be a common problem that there are feeding issues with a high pecentage of these rifles. I understand that the longer 458 Lott doesn't have this problem (but I have heard of one case of a CZ550 in 458 Lott that does experiences jams).

One guy I know diagnosed jamming in his 458 only if the round was on the left hand side of the magazine. It doesn't appear to be an issue with the loading ramp but more getting caught up inside the action (on the upper bolt lug [left hand lug when the action is open] camming section?).

Does anyone here have first hand experience with this and have they managed to solve it (apart from rechambering to a different cartridge like the Lott)? The importers over here don't offer any solutions.