ACCORDING TO BALLISTICS CHART FROM KNIGHT,FOR MY KP1,245 GRAIN BULLET WITH 100 GRAINS OF 777,IF SIGHTED IN AT 100 YARDS,MY BULLET WILL DROP 6.05 INCHES AT 150.SAME BULLET WITH 150 GRAINS WILL DROP 3.85 AT 100 YARDS.THAT'S A CONSIDERABLE AMOUNT.WITH THAT SAID,I STILL ONLY SHOOT 100 GRAINS.MOST SHOTS ARE WITHIN 100 YARDS.I DON'T FEEL THAT I NEED TO SHOOT 150 GRAINS.BEFORE THE SO CALLED MAGNUM MUZZLE LOADERS CAME OUT,WE ALL TOOK OUR DEER WITH 100 GRAINS OR LESS.SHOOT WHAT YOU FEEL IS COMFORTABLE TO YOU.