Bob I shoot the 33.95 JSB mkii heavies at 830 fps which produces 51ft/lbs of energy at muzzle from my wildcat. With this pellet my wildcat drops coons at 55Y everytime with head shots. Dropped a groundhog at 84Y in his tracks with head shot. I perform same pest control tasks for multiple farms as you do just thought I would tell you of the increased energy performance of the heavies . They will crush your pigeons with side shots through wing bones at 50yds also. You can review the difference between your present pellets energy and the heavies with your favorite ballistic calculator and see the energy difference down range. Thought this may be an option for you to try. Happy hunting Bob_O keep up the great hunts.
