danosrs, Blue Dot is a great powder, but it will work much better in high pressure loads than it will low. I have used it in all the magnums and it's one of my favorites for the .357. If you really want to continue using Blue Dot in .38 S., a CCI-550 magnum primer will help you get a more uniform and complete powder burn. A good roll crimp is advisable for slow powders in +P. Blue Dot is probably better suited to +P type loads if you have data for them, if not hollar back and we'll get you some. Your 110 gr. load appears to be a start charge for a +P load! Your cast bullet load is also a little on the light side. Whose data are you using and do you have a slightly faster powder on hand say like HS-6, WSF, AA#5. VV 3N37 is also avery good choice as are a number of others I'm omitting. Just some examples.