Dang, I really stirred up a hornets nest! Again, please let me state, in my defense, that I only had .25's because the store was out of .20's. I had stocked up on ammo the month before at the Halloween event, and I had to take what I could get. (I refuse to use wal-mart ammo) This was also the first battle where I got to use my new SR7 DEVGRU, so yes, I was on a rampage, but as Dragon stated, it wasn't a distance issue, since 25ft is a fair range of engagement. Stock spring on my gun was an m100, so I immediately had to downgrade to an m90 bofore I even brought it to the arena. My guess is the rate of fire may have played a part in the hard hit. Along with the light spring, I was running an 11.1v lipo, pushing the ROF to well over 30rps. Since then I've sworn an oath of semi-auto fire only, not just to prevent the liability, but also to keep from turning my gears into cheez-wiz.