I'm a little new to the world of mags, and was curious what realistic fps consistency one should be expecting to get out of the default setup: 68 Classic Valve + LVL 7 bolt.

I know there are a several of factors that come into play (gas source, input pressures, paint to barrel match, gun maintenance, etc.), but when everything is setup as correctly as one can achieve in paintball, what have you observed during your user experience with the 68 classic valve?