I have found the buffers cause more problems then they are worth you are shorthening the stroke of your pistol. Try it with the Buffer if it is ok leave it if not remove the buffer and see if it happens.
3-Point jam is simply when the round is binding between the breechface, barrel throat and the underside of the chamber.What is a "3 point jam"? If it's when the lip of the casing gets caught on the top edge of the chamber then yes, that's what was happening.
I have a Kimber Tactical II that did that for the first time around rd 300, only on the 1st or last round. after 1500 rounds, it would do it 3-5 times in a 100 rounds. When it first started, I could smack the back of the slide and it would ride it in (Forward assist on a 1911??). Eventually, it got to where that didn't work anymore.The last round would ride up the feed ramp and get lodged half way into the chamber at a sharp angle. I checked oal of the rounds and they were consistant with other boxes of WWB that I had.
Was yours a external extractor model?First off, hi y'all, first post (here).
I have a Kimber Tactical II that did that for the first time around rd 300, only on the 1st or last round. after 1500 rounds, it would do it 3-5 times in a 100 rounds. When it first started, I could smack the back of the slide and it would ride it in (Forward assist on a 1911??). Eventually, it got to where that didn't work anymore.
I sent mine into Kimber. They polished the chamber and feed ramp, and told me not to use McCormick mags (Actually, they didn't give me back my Kimber mag that I sent with the gun.) But they did replace my whole slide so kudos to them.
I'd say wait and see if it persists.