Being it is a 4" barrel and not 5" are there 45 acp loads that work better with the compact? I am going to go out and purchase some sd loads to try tomorrow. Any feedback would be appreciated.
My M&P45's get Federal HST 230gr standard, but any premium jhp you buy will serve you just fine (although I wouldn't recommend Golden Saber's non-bonded version)
Scroll down to .45 loads. Pick a couple and see which shoots best from your pistol. If you can't access it on LF, the pistol-forum.com has the same info.
Once you find a load you like, buy NOW, it will probably not be more available or reasonably priced in later in 2016 than right now.