I shot 3 different 177 pellet weights, 7.3, 8.4, and 10.3, all JSB Diablo. On low, 7.3--654, 8.4--634, 10.3--587, on med, 7.3--838, 8.3--797, 10.3--751, on high, 7.3--994, 8.4--939, 10.3--867 The 10.3 pellets seem to be the most accurate, but the others aren't bad at all.