I recently purchased a good quality 1911(factory stock, no modifications) in a combat style setup. I prefer not to name the brand at this point. I made sure it was broken in with new hardball and reloads with FMJ. It worked like a champ with anything that looked like hardball including some Lyman 452374 boolits.
A couple of days ago I took it to the range and started using H&G 68 style SWC, Lee 230 tc(standard lube groove), and NOE 230 RN boolit in it and had nothing but trouble. They wouldn't feed properly or chamber properly about half the time. 2-4 failures per magazine. I tried some Nosler 185ngrain jacketed hollow points in it as well and had the same trouble.
Today, I loaded a new batch thinking I may have been careless but the new loads didn't work a bit better than the last time.
I remembered I had an older Colt barrel in my bag that I had DOUGGUY do his chamber magic to a while back. I took it out and tried it in the new 1911 and it fit. Slide locked up tightly and everything worked as it should as far as gun function. I was even able to use the same bushing.
I fired a few rounds of hardball through it to make sure the function was correct and it even shot to the same point of aim.
I loaded up a few magazines of the SWC boolits and some of the others I had previously had trouble with.
I ran all of them through the pistol without a single hiccup. That new barrel that DOUGGUY worked on for me was apparently the ticket to perfect function.
I spent the rest of the time I was at the range trying to find something that wouldn't feed in it and could not do so.
The different barrel took care of all the issues.
Looks like I may have another barrel for Dougguy to work on.