I bought one last summer. I love it. Its a solid little gun, and feeds anything you put in the tube. Mine's ate about 200 CB longs, 100 mini mags, and 50 remington subsonics HP's. Never a problem of any kind. Just wish I had more time to shoot it.
Its as accurate as I can shoot too. I haven't done anything from a bench with it, but on a good day shooting off hand with the iron sights I've gotten roughly half inch groups with the CCI mini mags at around 25 yards.
The CB longs are accurate out to about 10 yards for me, beyond that groups start opening up. Your still inside about 4 inches from 30 yards easily and they're not keyholing or anything. Might just be my shooting too
I've read that CB shorts are a little more consistent. The gun should feed them fine, its supposed to feed shorts, longs and long rifles. I haven't tried them though.
I haven't done any modifications on it yet, but I've read that you can replace one of the springs on the trigger to make the pull alot lighter. I may do that just to see how much affect it has. Right now it breaks clean, and isn't any heavier than most of the other guns I shoot.
I'm really happy with it.