Quote: The feed lips on the sides of the mag are all the way out to the shoulder of the 1st round, so when you try to put in 2,3, and 4, you have to push the case head down on the shoulder of the loaded round It then cants the round in the mag down at a 45 degree angle which makes it very difficult to push the next round in UNDER THE FEED LIPS OF THE MAG..............
Ive got the Grendel CZ 527 American and like just every other type of mag, they all have their own quirks. Having said that, I dont find the CZ mag particularly difficult to load, at least not with the Grendel. The 17 Hornet is another matter, and much worse, IMO!
Anyway, Im right handed, so try this. Use your left index finger to push down on the rim or even the back of the case of the previous round, while pushing the new round down on the shoulder. If youve got fat fingers, you may not be able to push it too far down into the mag but, I can push the last round down far enough that the next round will start under the feed lips no problem.