I got a 24" wide shelf that is 6' long since I have two rifles with 30" or longer barrels and wanted one board for all rifles. If you limited your chronographing to 24" barrels or shorter, you could get by with a 5' or shorter board. I like the wider board/shelf since everything can fit on top of it but I drive a pickup so size of the board is not an issue for me. So far I have not needed the clamps to hold things in place but have not used it with large bore, dangerous game type rifles. The wider board also allows the whole set up to be slid around on the bench top to engage multiple targets left or right depending on the range set up you are shooting at. The whole point of this thread is to share ideas and we all should recognize that each idea might not work for everybody. For me, simple is better but that is just me.
