Been to UCIrvine Med and back, sorry.
Never seen one jump out, but know they can, and do, have seen several double live feds at matches however, and had one myself before I got a handle on it.
If you put a little STP on the feed lips you can get a lot happening all through the mag, you can bet on that.
Yes, the window is narrow, but it does happen, and this picture was taken because the member that owns the pistol was having the problem, and took the picture to show it.
Another interesting thing about the rail dragging the round backwards, especially on the last round, it does, and as the rail corner slides over the case head groove it flips the cartridge, like tiddly winks. Nose up, then back down again as the rail corner dozes it into the frame ramp. Or if the recoil shock is great enough, it starts its journey out of the mag, the rail isn't what finishes the job as if it were, the extractor would have a shot, but it's too late,too far gone, and just dozes the cartridge into the chamber, if the extractor doesn't jump the rim then it's over.
1911's with a buffer especially Kimbers, as the slide notch is slightly forward, so it can't clear the slide stop, will lock open as the last cartridge titters from the rail crossing the groove, allowing the follower to kick the slide stop up, and will lock open with the one in the mag. Take the buffer out and it will function normally. This especially with CMC's Devel follower, which if out of adjustment, is rocky. Chip and I discussed this at length and discovered that if the leafs where off just a little, you could pretty much bet the slide would lock open with one in the mag. Dial in the leafs and return the buffer as a test, and no failures.
Little things rock the boat.
LOG