Historicly Blue Dot has been used to get higher velocity with the 45ACP without a supported chamber. In my experiance it gives velocity without the best accuracy. I have about a half pound that I have had for 20 years for that very reason, there are more accurate powders available, but Blue Dot will shoot if you need to shoot something. By the way, the Blue Dot reputation is pretty much made by a 200 JHP ACP not cast.
Ed
Thx guys
I got my accuracy load with 700x but I'm always looking for new powders and loads, as soon as I can trade for more copper jacketed loads or pour some lead I will be working on the Blue Dot