best size for airsoft bbs would have to be 5/16 (7.9mm), or at least that I know of.
Brakeline that is.

wow, I really like the changes. It makes the site look very professional.

very nice ... i just got done like 10 mins ago with my first spudgun its a cannon. 2 1/5 foot long barrel 2 inchs wide, i dont really know how long the chamber is but its 4 inchs wide... i know im a noob so take it easy on me