Hi,
New to this forum, so please bear with me if I am asking an old question, but I couldn't find a thread with this. For my summer, light-clothing concealed carry pistol, I normally carry an m&p9c. I use standard power loads for weekly practice, but carry +p loads in my pistol (I try to shoot a box of full-power loads once a month). Will shooting a box of +p or +p+ loads per month cause any problems? I know the 9c is not meant for a steady diet of these loads, but will the box a month do harm?
Thank you for your kind assistance.

Skip

S&W warrants the pistol for all SAAMI compliant loads (as stated in your manual). That means yes for +P, and NO for +P+, for which there is no SAAMI spec.

Since the M&P is built from the start to be a .40 platform, the 9mm isn't going to stress the system.

The Illinois State Police spent many years shooting +P+ 9mm rounds through the 1st, 2nd and 3rd gen S&W 9mms, the M&P is a more robust system.

Yep, but they shot them till they broke them. I contacted them when we were developing our preventive maintenance program and discovered they didn't have one. Not real reassuring.

I've shot some +P+ through my M&P9C and it's just fine. But I ask why you need to shoot it so much? Must be expensive and unneccessary.

For me, I don't think that recoil with 9MM +p or +P+ ammo is that much more noticeable that standard FMJ. So I practice with the standard stuff and shoot +P or +P+ every once in a great while.