1911 Pro Series 9mm issues/questions

[romack991]

I picked up a 1911 Pro Series in 9mm this past weekend. #178047
Using the stock Wilson Combat magazines.

The gun shoots good for a magazine or two but then starts to have issues. Most of the time the round ejects and the next round enters the chamber but the slide does not close entirely. There also are a few instances where either the round would not extract or the next round would not feed into the chamber. Also the slide does not always stay open after the last round. After the second mag or so, its close to a 75% failure rate. Same issue with both magazines.

I've shot it twice now and had issues both times. Shot about 50rds each time. Using Blazer Brass and UMC ammo. Cleaned in between sessions and oiled per instructions.

Any thoughts? I'm new to 1911s.