Re: WTB a 1000 yard BR stock...
Switchbarrel is correct. The Tooley MBR comments on the McMillan website pertain to short range BR rules only. Short range classes have a special taper rule for the heel of the stock that aren't in any 1000yd rules from all 3 sanctioning bodies like Darryl pointed out. The Tooley MBR has a 5/8" taper on the heel that doesn't meet the short range rules.
Good luck! Myself, Dave Tooley and another shooting friend will be in Byers, CO the last weekend in Sept at the Colorao Rifle Club for the NBRSA 1000yd National Championship match. It's a 3 day match (Fri, Sat, and Sun).
Don't know how far away you are from Byers, but come on over and check out the equipment to give you a better idea of what it is by hands-on inspection.