I tuned my 30 cal Impact to just under 80FPE using FX 45 grain diabolos. Using 25 meter M16A1 Zeroing targets at 25, 50, 75, and 100 yards, I take 5 shots at each distance. At 25, and 50 yards I can stack all 5 pellets inside the circle. At 75 yards my average is 3 out of 5 over 25 targets...