I load the 124 gr Match Winner with VV N320 for USPSA competition.
4.0 grains with an OAL of 1.123 gets me 1050 fps out of a CZ Shadow 2 and a Sig 320X5, 130 power factor.
I\’ve chronoed it over a Pact chrono as well as 2 different Lab Radar chronos, functions perfectly in both guns