I just measured it with my calipers- the signal pin sticks out on the fore end 0.23"
That seems mighty excessive. When a round is chambered, that pin will stick out the back the same amount. It makes no sense that this length is needed to signal a loaded round, and in the dark, nearly 1/4" would be as easy to feel as 1/8"
If the signal pin where shortened 0.050- 0.100" on the fore end, the round would not be at so great an angle plus it would travel further up, and I bet the round would chamber normally
I think your suggestion that the pin is wrong is on the money, Dfariswheel. I can see no functional or logical reason that the signal pin is so far out on the fore end. Simple trig tells me that removing a little length changes the height the round would go up and the angle it chambers at a lot. In addition to being trapped under the pin, I'd wager that the round is at a poor angle to go into the chamber
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