I use BlueDot in my 10mm loads. It runs the full gamet of bullet weights. I believe it is one of the most tested powders for the 10mm. I found it's data to overlap more from all of the sources I have looked at and be more consistent between the sources. If one finds the same load listed in mulitple sources, it's usually a good place to start. IMR 4756 is a very energetic powder, as is BlueDot. As stated, it's always best to start low and work your way up. A Colt or Glock does not have the margin for error like a M700 Remington or M70 Winchester. Bob!!