My Dad described this to me and I flat out didn't believe it. Then I got it in my own hands. Normal (long) takeup, then instead of releasing the striker, it made me squeeze the crap out of it before going Click.
I stripped it down and looked at it. There was some wear on the side of the trigger bar that sticks up out of the grip and acts like a disconnector. Other than a little carbon inside the striker channel, there was no grit, debri or anything out of place.
Without the slide on, the trigger and trigger bar / disconenctor / sear worked perfectly. Put it back together and no bueno. Same impossible trigger pull. I then stripped the slide down - pulled the striker assembly, striker block, extractor, spring & detent. There was nothing amiss there either.
I play with it while the slide is in various states of re-assembly. No barrel or spring, just holding it in place on the frame Now it seems to work in a more normal manner. I get it put together again, and suddenly it's acting like it should. Pull... pull... pull... pulll... click. No more 20+ pounds of pressure needed to get it over that last little bit of travel.
Any ideas what was wrong? I'm stumped. All I did was strip it down a few times, curse mildly as I realized I was missing a pin or spring once or twice, and reassemble it a few times. There is no logical reason why it was malfunctioning or why it is now working properly, and that bugs me.