So,if you use the tool they use to rate the speed of greens in golf and you set it up to roll five feet on the table. If you put it 2 1/2 feet from the rail then it should travel less than 2 1/2 feet back,correct? On a diamond barbox how many would wager that it travels less than 2 1/2 feet after contacting the rail? I mean most of you claim its completely impossible,right? By your logic of loosing energy it should only travel what 1 1/2 feet?