I did a search under both this M&P forum and the ammo forum and manually browsed both but did not see this topic (my apologies if it has been addressed); I bought a box of TulAmmo steel cased .40 at WalMart yesterday on my regular WalMart ammo check, being that is was $15 a box for 50 and the only .40 on the shelf. I have a 6 week old full size M&P.40 and am picking up my new Shield.40 on Friday. I have been shooting Federal and Remington with no issues and have Fed premium for my SD ammo. I did some research on the TulAmmo steel case rounds and needless to say the feedback is all over the place (dirty, very dirty, high FTE, great ammo for target, good value, etc...). Looking for anyone who has used this ammo in the last 12 months and has shot it out of their M&P.40. My inclination after my "research" is to give that box of ammo away... While I like a bargain, my first priority is to not damage my firearms in any way by taking a chance on sub-standard ammo. Thoughts?