ME AND SEVERAL FREINDS HAVE HAD GREAT LUCK ON WHITETAILS USING A 140 SIERRA PRO HUNTER, PUSHED BY IMR 4350, AND A FED. 210 MATCH PRIMER DONT GO PAST 52.5 GRAINS SHOULD GET BETWEEN 2700-2900 FPS HOPE THIS HELPS GOOD HUNTINGP.S. MY PET LOAD IS 49.5 IMR 4350 IN T/C ENCORE MOST OF THE TIME IF I DO MY PART IT WILL GIVE A RAGGED HOLE FOR THREE SHOT.