The only way to find your best load is to do as TWELCH said. I did the same thing just about word for word. Once I found my best load, I did some more experimenting. Gives me a good reason to get to the range and shoot more. The most accurate load I have found so far from my Traditions Pursuit XLT .50 cal is 95 grains of loose 777 behind a .40 cal, 240 gr PR Dead Center bullet with a Harvester crush rib sabot. I get 1.5 - 2 " groups at 150 yds.