I shoot a Steyr LP50. I haven't attempted to chrono the pellets, but my understanding is that airguns used in international competition, such as the Steyr, are limited to less than 500 fps, so I would assume something in the high 400s or so.
Edit: Your question made me curious, so I did some Googling and found that I was wrong about the 500 fps limit for competition - that's the limit for airguns in Canada, so that may have been what I was thinking about - but not too far off on the velocity. According to one seemingly authoritative site I looked at, Olympic quality air pistols such at the Steyr are typically in the 550 fps range.
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Last edited by FlyFish; February 14, 2013 at 11:59 AM.