What OAL are you guys loading your ammo to for your M&P 9 Pros?
I am currently loading my 147gr loads to 1.135".
However, I had a bunch of minor ammo for my open gun along with me at the range, loaded to 1.170", and decided to try it in the M&P. Wouldn't you know, it fit the mags fine and functioned perfectly. I never would have guessed ammo that long would have functioned in the M&P . . .