It has been my findings that Blue Dot is a fine powder for 357 and 9mm as long as you use heavier boolits. It just like pressure to settle down and deliver more consistent velocities and pressures. In my SR9 9mm Ruger, it really makes the 147 gr cast get up and go as it does with 160gr boolits in several 357's. It is also a powerful powder for 12 ga slug loads. I feel like it suffers the same precautions that H110/296 does--don't load it down and put some pressure on it. There are plenty of powders better suited for lighter weight boolits. count me as a fan of BD.