I should have clarified. Takes more v565 to equal a lesser charge of the v560 in my 6.5sst. About 3.5 to 3.8 grain more v565 to whatever v560,and it fills up the case more than the v560 which can be good or bad depending...but for me the V500 series of powders is a bit too corrosive. The nitroglycerin addition seems to really burn up throats compared with other powders. Since I'm shooting 200 plus rounds in one day the price paid for a little more velocity isn't worth the trade off with barrel life,especially since I can achieve the results I need with 7828. But absolutely for a hunting load for a hunting rifle that might see less than 20 rounds in a season, I could justify the means to an end using the v560,v565 or v570 powders.