The very first loads I did at the start of 1990 were with Blue Dot powder. Was doing 10.5 grains under my 200 grain cast back then before data came out.I've hunted a fair amount with the 10mm, and have had great results with the XTP 180gr on deer and hogs, mostly one shot kills when I've done my part (did have to run a hog down and put a second one in him last fall). I've used the factory Underwood offering and more or less replicated it using Blue Dot at 11.2gr. They're spicy but safe (in my pistol).