Frame Size is a command on the Bullet menu. It sizes the frame around the title, subheads, documents, and/or graphics in a single bullet chart or a series of charts. You should specify the frame size after specifying the chart size.
Select the Automatic Size option to automatically size each chart in the series according to the amount of information from the underlying outline. Select the Manual Size option with a scope rule of 0-999 to make all the frame sizes of a bullet chart series to be the same.