I captured some video that shows a can in flight. A lot of 'spudders' are thinking about working on riflings for their guns. The more I see the less I think there is a need for riflings. Take a look at these photos of a can full of water in flight. The can has plastic tape over the top of the can to keep the water in. The can flies pretty straight. It appears that in the fifth frame the can has touched the top of the monitor and left some water spray or something behind.