If you want to really bewilder airgunners you pull this out of your ass:

target="_blank">Jerry rigging a Gamo

Pros:

1. Easy to cock.
2. Cheap platform.
3. High velocity numbers.

Cons:

1. Upgrade costs more than rifle.
2. Cheap fit and finish.
3. Have to basically rebuild gun.

I love how he uses the lightest pellets to show high chrony #'s. How are the groups at 50 yards? I'd be surprised if they hit a paper target the size of a square foot . You won't hear from this guy again.