That's not as good as I thought for power, I think that my Daisy 880 does 600 with a 7 grain pellet, but I don't buy good ammo for it so accuracy isn't the best.
You should check out the Crosman 2100, that one is actually a good deal more powerful and feels pretty good, while still being a multi pump, and isn't much more than an 880.
There's also the Benjamin multi pump that's pretty expensive, but I doubt it's worth it