a bit ago i was buying up my supply of components for the year. wc876 powder was about half the price of my normal wc860, so i bought 50#'s to try. Got around to it this week and i just couldn't find much data on this powder. only thing i really found was to start with a normal 215 grain load. so i did - much to hot for me. I finally settled for 208 grains behind a api. seems to work well and for half the price, wc876 is currently a good deal