I have to get at least one ha ha, and my chances are better if I take 3 separate shots at 50, 60 and then 70 yards then they are if I only take one at 50.
My vote is for one good one at no more than 50! Just because they are breaking from cover at long range, does not mean that you have no alternative but to shoot at that range. You can always decide not to shoot?
Enjoy the rest of your season. You did not say how good a shot you are? In the off season or certainly before next season, I would go to a trap range and aks if you may shoot some targets from the gun down or unmounted position. Start at the 16 yard line and when you are hittng more than you miss, move back. Go to the 27 yard line and do this. If you are not able to hit way more than you miss, you should not be shooting those 50 yarders. I do not wish to sound too judgemental, but you seem to be taking part in an upland version of sky busting.