I received my WC 47NX 10mm magazines. The follower has a dimple on it. My Dan Wesson Specialist 10mm magazines have a follower that looks like a cartridge case which is smooth with no dimple. When I attempt to charge my pistol from slide stop with only 1 round in the mag, the WC jams once every 3 attempts. The DW magazines (Checkmate I believe) do not. The WC 47NX feeds fine except for the last round when cycling ammo by hand , not actually shooting. When ammo is still in mag, there is no dimple hitting bottom of cartridge. It appears to me the jamming (with only 1 round in magazine), occurs because the case rim gets ahead of the extractor hook. I read about the dimple and it sounds like it’s intended to address the dynamic situation of the last round with mag spring at minimum compression (up force on round) and prevent that round from moving forward ahead of extractor hook when feeding. Lots of dynamic forces going on with slide moving back and forth along with spring pushing up on cartridge. Additionally, the 1911 extractor doesn’t do great at snapping around the case rim. The design is “controlled feed” where the case rim should slide behind the extractor hook before the breech face pushes the round forward. My DW magazines appear to function fine and my initial reaction to the WC 47 NX failures were disappointing. However I have not shot them yet and was just verifying function with manual cycling. As I said, no issues until the last round. I’m thinking proper function can’t be assessed unless firing the pistol. I read that John Browning put a dimple on the follower because he thought it needed it. I have seen magazines without a dimple and my DW factory mags (Checkmate I think ) are smooth. I am a 1911 rookie and was just acquiring 2 more magazines to add to my 2 factory mags. Can someone either confirm or correct my understanding of “the dimple”. Is it really a good thing so feeding failures manual cycling are invalid because it doesn’t replicate firing the pistol.