New to buzzards, not sure whats going wrong.
 

I am having a problem with a buzzard that just arrived. When I pump it doesnt fire.

I am not to familiar with buzzards but, it seems like the stroke doesnt go back far enough to cock the bolt. When I push it forward again it seems like the stroke doesnt go forward enough to allow the sear to release when the trigger is pulled.

The marker is working intermitantly if I slam the pump handle back and forth aggressively?

I am having trouble diagnosing the problem. Any advice would be appreciated. A link to the internals would also help.

Thank you.

Air it up.

http://www.pbnation.com/showthread.php?t=1314094

Yeah it sounds like you were trying it with no air.

I did have a 12 gram running. Would firing co2 to rapidly cause a problem?

Are you sure the 12g pierced?

Yes I think so because it would fire some of the time.

I just tried a new 12 gram. I got 2 shots off and then I would have to pump 4 or 5 times before the next shot would fire. This continued for the next 3 or 4 shots so I stopped.

Is it possible the bolt is not coming far enough forward to seal in the end of the barrel ( yes its beveled ) therefore the sear doesnt trip?

I had this issue when I had the velocity adjuster turned down too low. I couldn't cock the marker it anything and I had to slam it to cock and fire it. I was trying to hit 220's for an indoor field. Around 240FPS I started having the issue. Then when I tried to lower velocity again it got worse. Earon gave me a shorter spring to use indoors when I needed low speeds. The stock spring was too long/strong to be adjusted so low.

Velocity is adjusted through the bolt I think? Is it closewise to lower or clockwise to raise the velocity?