My results with both the V1 and V3 in .25 is similar. I now shoot exclusively with the JSB 25.4 gr pellet, not lead free. I charge the guns to 310 bar and tune to about 700 FPS. I get a full (17) round mag at virtually the same speed and shoot one ragged hole at 25 meters. The gun is designed for pellets not slugs. I use the 25.4 JSB pellet as opposed to the 39 gr pellet for economy as you get 50 more pellets in a tin for the same cost. After one mag the tank pressure drops to 220 bar. I then recharge the gun back to 310 bar.