I'm in the process of organising a fun shoot for big bores down here in NZ. My thoughts on it so far are
1. 3x shots at 50yds using shooting sticks, shooting at a scored target ie 10 ring, 9 ring etc (no time limit)
2. 3x shots at 50yds freehand, shooting at a scored target (no time limit)
3. 3x shots,timed. After first shot timer starts next two to be fired in 3-4 seconds 1 at 50yds off sticks, one freehand at 40yds, one freehand at 25yds, reactive type target (balloons, pieces of wood etc)
4. 4x shots timed, shoot 2 shots at reactive target at 50yds, reload and shoot 2 more reactive targets at 50yds. Each miss is 5 seconds added to time.
Should be a bit of fun.