Personally I'm an old school kind of guy. I like to use a CPVC modded at2k. It's a standard quad barrel mod with some dowel inbetween the barrels. I wrapped the barrels in black electrical tape and there ya go. I use that in all situations, because it has good accuracy, good range, and good ROF.
Well, after five or six rounds of not even coming close to your score I have decided to take my beating like a man. Use an excuse, and say I could whup you at something else.
I have to do my summer reading for school ( the excuse)