Finished up an antelope hunt in WYO, used 55 gr GK. My oldest daughter hit her doe behind the front shoulder, at 100 yds, bullet passed through and the lope stumbled about a half a dozen steps and fell over. I shot the remaining two does, one at 150 yd and the other about 175 yd, bullets passed through and the critters made a typical lung hit run for about 25-30 yds and piled up. Loads were 22 gr of WC844, chronographed at 2940 fps, settled on that combo as I could place 5 shots in 3/10 inch at 100. Tried several loads with the "X" bullets, they just will not shoot accurate out of my 788s, they are an older lot (bought almost 15 yrs ago) maybe the newer ones would show promise.