yea i know its 400 fps limit, i want to build a dmr set,where i would put in a 450 fps spring, tight bore and bore up so that it would shoot about 500 fps without having all the power behind the spring to strip anything, with that said, i would be using .3 or higher bb's as a dmr. so theoretically it should shoot about 380? i was wondering if they would let me chrono with my own bb's or if i will be given a .2 from the staff that is chronoing. last time i went (first 1 for airsoft) they didnt ask to see my bbs or anything and just assumed i was shooting .2's but that was a dead day where we only had 5 on 5 games, with bigger games i thik they would check, anyone know of this?... if you have gone to a big day or a day where outlawz are there or something. do they make you chrono with a .2? or can u just chrono with w/e bb u have in your mag?