Actually there's a little more to it. 20 ft. bars are sheared to length, then color coded for caliber. Then they are racked 40 barrels per rolling rack. From there they get drilled, then reamed. From there, they are rifled and sent across the isle to be contoured,threaded and crowned. Then they are straightened and sent to chambering. After chambering, some barrels get polished, the others get shot blasted after the receiver is installed. Somewhere in that mix they get checked periodically.