I did have one gun years ago that shot pretty good with Blue Dot. It was a 5" S&W Model 629 Classic and I was shooting 240gr. Remington Jacketed Hollow Points. A buddy shoots Blue Dot in his Ruger Bisley with 225gr. Speer 3/4 Jacket Semi Wadcutter Hollow Points with good results.
Truth be known I always had better results with Blue Dot in the .357 Magnum and +P Loads in the .45 ACP.
Larry
T/C Handguns, One good shot for your moment of truth !