View attachment 9165I have struggled a bit with my .25 Zelos. I initially got some somewhat bad advice about pellet weight and some settings. I have settled on FX Atomic pellets and 2000 on the reg. Have not messed with the hammer spring. Shooting 835-840fps, and very accurate out to 90 yards. I have picked off 3 mice from 82yards. I shine a mag light out to a wood pile where these little suckers run around at night. I shoot for the glow of their eyes. Pretty impressed with that shot, if I DO say so myself.