7/8, 1, or 1 1/8 oz., #8's or #7 1/2's: just go to the patterning board, see what your pattern looks like at what ever range you shoot at. 16 yards + slow hands= 36 yds. Fast hands, move in.
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 skill of the shooter) measured in yards, and means everything.