Yeah, it's pretty fast. My rifle shoots 430 fps w/ a .3, which is... roughly 2.6J. But because of the (relatively) long flight distance, it doesn't hurt TOO much. We do however recommend the use of shamaghs or mouth guards for every player around here. I've never been hit with my own rifle (probably should be), but I've seen people yelp pretty good when they get hit.
Good thing I live in the States then. As a Canadian citizen who moved, there's a lot of things I hate about living here. The fact that I can use whatever damn airsoft gun I like (except for Systema M4s) is not one of them \o/