Molly,
Can you handicap a BP competition? Yes. Simple? Not so much.
Several years ago I was a member of a ML club that held a monthly shoot that used a handicap system. The match program was 4 targets, the NMLRA small bull and large bull at 25 yards, and the same 2 targets at 50 yards, 5 shots on each target, for a total possible 200 points. Cash from a portion of the entry fees was paid out based on handicap scores. In addition, 1 ounce .999 silver coins were awarded for the high scratch (non-handicap) and high handicap scores. When you won silver, you couldn't win silver again for 6 months.
At a shooter's first match, their handicap was calculated using the following formula.
200 possible points minus the shooter's actual 4 target score multiplied by 80%.
If my scores on the 4 targets totaled 150 points, my handicap would be 40.
200 - 150 = 50 x .80 = 40 This amount would be added to my scratch score at the next monthly shoot.
We kept a record book and averaged each shooter's scores for the previous 6 matches they attended. This cut down the possibility of sand-bagging.
-Ron