Most powder measures want throw stick powders with long extruded grains very accurately. The best thing to do is get a good throw that is close to your desired load and use a trickler to finish it off.
I don't know how consistent your measure is throwing charges but a few tenths as long as your not using Max. loads want make that much of a difference in the real scheme of things,there are a lot more variables that will affect accuracy than your powder charge being dead on every time. For instance bench rest shooters throw charges by volume not measured weight.
I use a RCBS Lil Dandy and rotors to throw 99% of my powder for pistol ammo and even some rifle loads I use with cast bullets of course I always check the loads with my scales. The only ammo I use a scale and trickler with for loading each rd. is my hunting ammo that I have a certain load tuned for that rifle,I load up 50 rds. and I'm set for a couple years.
I've found that light to medium charges with cast lead bullet in pistols and some rifle loads shoot the most accurately. For rifle and pistol loads that use jacketed bullets powders that fill the case around 85 to 90% shoot the most accurately in my guns a few tents on either side make no difference in accuracy at least with my shooting abilities.
I throw Red Dot charges for my 30-30 cast loads with my RCBS DUO measure and it not dead on the money all the time +/- two tenths usually is the norm and I get these kinds of groups with my old Sav. pump 30-30 at 50 yds. on a regular basis.
