Good, but a little weaker than the rest.
PMC Bronze 55gr FMJ (PMC223A) was significantly slower than the competition out of my 16" S&W M&P.
PMC bronze: 2760fps, 931 ft-lbs
Federal 55gr FMJ (walmart, $40/100): 2980fps, 1085 ft-Lbs
Fiocchi 55gr FmJ, 2826fps, 976 ft-lbs
Wolf 55gr FMJ, 2882fps, 1015 ft-lbs
And the Hottest, cheap 55 FMJ, Winchester white box USA 5.56: 3096fps, 1171 ft-lbs