DF,
A friend of mine bought one this summer and it one-holes A17 ammo at 50 yards. Dunno how fast it's going since he doesn't have a chronograph, but it's advertised at 2650 fps, 100 more than the "standard" 20-grain .17 HMR ammo.
In my bolt-action CZ the A17 ammo averages 2850-2900 fps and is very accurate, shooting to the same place at 100 yards as standard stuff. Used quite a bit of it this summer on prairie dogs, where it works REALLY well.
