I switched last year from weighing pyrodex to weighing 777, I did not reduce my load, and found no difference in accuaracy, I did find a world of difference in cleaning. After 7 or 8 shots the amount of junk in the barrel was incredible, what would normally take patch after patch after patch, to clean with pyrodex was easily cleaned with 4 patches for the 777. I switched loved it, and got my dad to switch too!!! Im sold on the 777.... 90 grns and 240 gr thompson sabot.