9mm major in S&W M&P?

Anyone know if the standard full-size S&W 9mm plays nicely with rounds loaded to 9mm major length and oomph? Not sure if the mags will even take them, let alone feeding and function.

I reload for my M&P 9FS and run the cartridge OAL right to max with 125 gr. LRN. Not sure what you mean by major. The only time I have trouble is loading light. Which I have learned to avoid. Can fire +P but I think I read +P+ is a no-no. Load up a small batch and try it. That's what I do....

Good luck...
LNK

What is your application for overloading 9mm in a Plastic M&P?
USPSA Open?
If so, you might bring it up on Benos.
I found one thread there that indicated it would be a very experimental project.
http://www.brianenos.com/forums/index.php?showtopic=119789&st=0&p=1358872&hl=open&fromsearch=1&#entry1358872

I'd call or write to Dan Burwell (http://www.burwellguns.com/). I know he's played with it quite a bit and he's become a bit of the M&P guru.