Yes I know all about how bad steel case ammo is - so spare me those comments. What I am curious about is - has anyone shot a good bit of steel case ammo in a M&P 1.0 9mm? Did you experience any problems with it?
I have shot a good bit of it in Glocks, Walther PPQs, and Sig 320 without any hesitation or problems. Now I am curious about my M&P 1.0 9mm as to whether it can handle steel case.

Standard m&p, no, shield yes. It's fine. Steel case ammo being "bad" is mostly nonsense.

Steel case Winchester would not work consistently in my M&P 9 Pro. Whether this was because of the alleged timing problems with the barrels or some other issue I don't know. It was fine in Sigs and Glocks.

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