Just IMHO, you can never have too many Remington 870 barrels standing in the corner...
1. The pattern board is your friend, use the Dam thing!!!
2. The maximum range of a firearm and/or cartridge, is usually measured in miles, and means nothing.
2a. The effective range of a firearm and/or cartridge, is usually (the ability of the shooter) measured in yards, and means everything.