Early in and Smoke pretty well got it right. I've been toying w/ a 20 yd shot w/ an Emax doing 328 fps, the reaction time for a deer at 20 yds., w/ that speed is like 3/16 of a second, lol, ain't gonna happen. My opinion, is take the double lunger and go w/ it, at reasonable ranges, i.e. under 30 yds. Even w/ the 328 fps, 35 is my limit. 36 or 37 they walk, there's always tomorrow.