Excellent writeup. I can tell that it took a lot of time in the experiments and in the execution. Kudos!
A couple of points to bring your attention to...
The bullet nose bumping the barrel ramp is the bug that leads to the 3-Point Jam by pushing the barrel forward and up...which means that the barrel lugs try to engage the slide's lug slots...that aren't in position yet. The way to determine the difference between a true 3-Point Jam and a simple stem bind failure to go to battery is to see if you can push or nudge the slide into battery or not. If you can...It's a stem bind. If you can't..it's a 3-Point.
The correctly functioning feed function guides the bullet nose over the top corner of the barrel ramp...holding the barrel down and preventing any forward/upward movement...and early lug engagement timing. Only the wider area of the bullet ogive should contact the barrel ramp, and at most...just a few thousandths below the corner. This has a camming effect that adds downward pressure to the barrel that increases as the full diameter of the case moves into the chamber.
Like the "Bolt-Over Base" misfeed and the "Rideover Feed"...the two are related and share some common causes...but they're not exactly the same thing. The 1911 pistol correctly functions under some degree of stem bind.
Excessive stem bind is what stops'em. 3-Point Jams are true jams, and usually require hand-cycling the slide to clear and start over, while the stem bind can usually be cleared by pushing the slide into battery.
Second...The Colt magazine with the flat/undimpled follower is basically nothing more than a McCormick Shooting Star with a nicer finish...and both usually supplied to the respective customer by Metalform. They're 8-round wadcutter magazines, pure and simple, and they both have the Devel follower that rocks forward and eats alloy frames while you wait.
On the Wilson magazine's coverup by losing control...Precisely...and it loses control earlier with the loss of each round in the magazine, as the spring tension falls.
Good text. I liked it.
