I have found that using 2 baffles one over the other about 1" above the bottom them spaced about an inch, in opposed directions helps. Then I weighed charges from full to nearly empty. In the 4" of the center of the powder tube I found a "sweet spot" where the charges were fairly consistent, marked the top and bottom used one tap up and two down. Then run them inside that zone. Usually with imr 4350 & 4831. Not perfect but way better than before. The chargemaster is still the way to go if you can.
