Originally Posted by lurkingknight
There's your problem. You're getting out ranged because you don't have enough energy to get the BBs out that far. Is there a particular reason you're using such a light spring?
guys with closer to 1.48J will out range you hands down because their muzzle energy can carry their ammo out farther. .25 is probably as stable as you'll get with a 1J gun, but you're at a pretty significant disadvantage.
^ This. Why are you shooting at ~280fps for a outdoor/field gun?