I have an older Para Ordnance P-10.45 that has been giving me problems for a while now. I'm just about to replace it, but I thought I would start a thread and see if someone has any suggestions other than what I've already tried.
This thing will not shoot regular 230gr. fmj's reliably. I get 3-point jams aka stem bind. Sometimes its 1 in 100 rds. and sometimes it's 1 in 20. It's really erratic.
The first thing I did was replace the recoil spring.
Then I polished the feed ramp and throat.
Then I replaced the magazine springs.
Then I replaced the extractor.
I was going to give up at this point, but I found this article on M1911.org about 3-point jams and "riding the link".
The 3-point jam link is about 1/3 down the page if your interested in reading it.
After reading a few times to understand what he is talking about, I checked my gun out and it appears that it does in fact ride on the link rather than the bottom lug. I followed the instructions for filing the top of the bottom link hole, and it certainly feeds fmj's better by hand at least. I'll go shoot a couple hundred rounds in a little bit and I'll let you guys know how it worked out.
Anyways, if anyone has any other suggestions I would certainly like to hear them!
BTW, it feeds Ranger T, and other premium hollow points very well.