get it chrono'd first. you might be fine. if not run 1000 rounds or so through her doing a little target practice. then chrono again. alot of guns will lose 10 fps or so pretty quick as they don't always come with a high quality spring. i had an echo1 p90 that was supposed to be same fps as yours. i only got around to checking after playing a few games but she clocked in around 390...
Last edited by targetGspot; March 4th, 2013 at 23:24..