Hers's some of my chrono data; mostly averages of between 20 & 45 trial shots:

Shot from a stock S&W M&P9-Pro (5" bbl):

5.2 Gr AA#5 w/ Eggleston 124 coated RN: Avg.Vel @ 987 fps, SD @ 13 fps

3.5 Gr W-231 w/ Eggleston 115 coated RN: Avg.Vel @ 919 fps, SD @ 19 fps
4.0 Gr W-231 w/ Eggleston 115 coated RN: Avg.Vel @ 1028 fps, SD @ 23 fps
4.5 Gr W-231 w/ Eggleston 115 coated RN: Avg.Vel @ 1145 fps, SD @ 15 fps

Shot from a stock CZ-85 (4" bbl):
5.5 Gr AA#5 w/ Rainier 125 plated RN: Avg.Vel @ 973 fps, SD @ 25 fps


Shot from Springfield 1911-A 9mm (5" bbl):

5.2 Gr AA#5 w/ Berry's 124 plated HBRN: Avg.Vel @ 926 fps, SD @ 26 fps

5.0 Gr AA#5 w/ Bayou 124 coated TCG: Avg.Vel @ 923 fps, SD @ 18 fps


I didn't note any failures to cycle or ejection problems with any of these light loads. -S2