I picked up a used M&P45 to try out. I ran 75, old, turned in, chewed up duty ammo (Gold Dot 230 Gr HP) thru the gun. It chewed them up and spit them out, no problem. I then shot 50 rounds of reloads that looked like they'd been in a fire. Again, the gun didn't choke at all. I was impressed greatly. And all my friends were shocked at it's accuracy. Other than a suck trigger and a terrible finish (lots of factory milling marks and divots that were melonited over), it's a great gun. I'd go M&P45 over a 1911 any day.