Got to go shoot this load of 60.2 grains of IMR 7828 SSC behind the Hornady 139 SST through the Chrono this morning. The Chrono was set at 10 feet in front of the muzzle. Here is the results:
Average 2830 fps
Standard Deviation 23.71
True Muzzle Velocity 2836.61
Spread 54

FPS Ft-Lbs Power Factor
Shot #1 2796 2413.26 388.64
Shot #2 2833 2477.56 393.79
Shot #3 2850 2507.38 396.15
Shot #4 2841 2491.57 394.90

This should work for any Antelope and coyotes that I run across.