So, I made it to the range today for the maiden voyage of my M&P 40.
I tried 5 different varieties of ammo and it ran without flaw. Of the loads tested today, all were shot offhand at 30 feet. Most were shot for function but I kept a few targets that were shot for accuracy and drills. Here are the loads tested:
The Speer, Gold Dot 180gr surprised me by stacking rounds and then I finally threw my first flier with it on my "Accuracy target". I'm still getting used to this trigger. But that is 5 rounds with two making one slightly elongated hole, and one low shot from my poor trigger control.
Hornady 165gr Zombie Max (Same as the Critical Defense loading) didn't do badly either.
The silhouettes were mostly shot as controlled pairs, or as fast asI could get back on target. All rounds seemed fairly well regulated with regard to point of aim being close to point of impact.
Overall impressions are very favorable. The sights are easy to distinguish, and were on target out of the box. It digested 240 rounds of mixed ammo, from 165gr FMJ and HP, to 180gr FMJ and HP ammo. I still have to find some 135 and 155 ammo to try out. For all of the reports of .40 S&W being a snappy round, the M&P seems to be very comfortable and controllable. The interchangeable back straps, low bore axis and polymer frame construction go a long way in making this a very comfortable gun to shoot. There were three other shooters at the range who varied from quite experience in IDPA, and IPSC shooting to a military member with a variety of guns including a Beretta PX4 at the time, to a novice shooting his first gun (a Ruger LCR). I let them each run a 10 rounds and they also found it very comfortable to shoot and their only complaint was with the trigger, but they all made decent hits despite the trigger complaints.
So, All-in all I'm pretty happy with the purchase and the first outing with the M&P. The trigger will either take some getting used to or a replacement. I'll hang on to it and work with it for a while before deciding.