Depending on the settings, the gun would only be able to crank out 13-14 bps. It wasn't a pressure dropoff issue, but rather an issue of how long the different firing stages took to elapse. It's right there up under the 15-bps cap though. Naturally most of teh n00bs out there underestimate how fast...well, how fast anything if it's not 20+ bps.
I hate teh n00bs.