I sure was surprised at the range last week. I purchased a new Sig P220 Carry Gen2 SAS and had put 300 rounds of ball through it over the past month or so. Last week I shot 100 rounds of 230 gr hardball, then followed with 40 rounds of Speer Gold Dot (also 230gr). I had 4 failures to go into battery. Didn't take much to nudge the slide forward, but it surprised me.... I have an older Sig P220 that has over 5,000 rounds through it and it has had 0 malfunctions from the very first day. Maybe I expected too much, but I thought I'd have the same experience with my new pistol.