Patent ID: 7631454

Claim:
A cylindrical shaped barrel for use in an expanding gas powered ball machine to propel seamed balls, the barrel comprising: a) plurality of openings in a cylindrical section of the barrel, such that the openings allow expanding gas to pass through the openings as a ball is fired through the barrel; b) the barrel having a back end suitable for loading seamed balls and the barrel having a front distal end suitable for the exit of seamed balls; c) the barrel having two sets openings with each set of openings comprising three or more rows of openings; d) wherein the two sets of openings are opposed to one another; e) wherein the two sets of openings are found within the first half of the barrel ,the first half of the barrel staring at the back end of the barrel; and f) wherein the barrel has an inner surface and the inner surface has a plurality of grooves that are circular in shape and in a plane substantially perpendicular to the longitudinal axis of the barrel, and wherein the plurality of grooves are spaced along the full length of the barrel.