I recently made a removeble barrel mod on my AT3K. It has a 1 foot CPVC barrel with a 1/2 inch PVC connecer. The PVC is inseted into a persction medicance bottle. I shot it even. 90 feet. Slightly angled, 101.4. These are pretty close toexzact measerments. Only off by inchs. Well I am working on making 10 inch clips so reload time is cut even though its is low do to the breach loading. Ask nerfman, ne maeasered it with me.
I just got a EAB. Great conditon. (Cocking handle sightly bent, it happend when they were shipping it.) It shoots great and the expanding stuff worked. I took it all out put a huge 1 foot CPVC barrel and nothing. The barrel is air tight with a mouse pad and duck tape. Next i used a short copper barrel. It shoot. 30 maybe 40 feet, realy inaccurate. Please help me!! What should i use !!