I never got around to getting my son's pronghorn on here from this year. He anchored him in his tracks at 200 yards with his 257 Weatherby MK 5 shooting 100 grain ttsx bullets at 3760 fps. The buck dropped instantly from the shot faster than I could follow with the binocs. He is a nice 14 1/2" buck scoring in the high 70's. Good mass and prongs.