Originally Posted By: DuckRyder
RE: 9mm 1911's an 115gr. Many seem to have issues with 115gr ammunition to the point that some manufacturers advise against it. Stock 9mm 1911 recoil springs vary quite a bit from about 9lbs to 14lbs. I run 14 in mine. It would be necessary to have the exact details of the malfunction to provide any meaningful advice.
From what I understand, it doesn't feed and/or sometimes doesn't get the old brass ejected. It's not a consistent problem...it's probably JUST on the fence of working or not working, and a slightly lighter charge here or there will bring it down. I have not yet shot it myself, so I have not been able to observe the ejection pattern, if there is one.