The best Two Ranges I can think of is the Lethbridge Range or Sibbald Flats,which Is west of calgary,and I think is called "Rosebud"....That would be awesome if this shoot happens.....both ranges go up to at least 300 yards,and have roofed benches...the lethbridge range has elevated burms@ the 3 ranges just like in the pictures of other ranges in cooper one shot compatitions.
Im sure someone from Lethbridge or calgary,can describe there 2 ranges in greater detail!
I know you can count my dad in.......hopefully me too if work/the boss cooperates.