Advice please I'm currently loading .243 55g sierra blitzkings in both Norma and RWS brass with 43 gns of Accurate 2520, using CCI primers with a COL of 2,605.
I'm getting a sooty deposit on the outside of the spent cartridge .? the thing is, these loads are producing no signs of over pressure and are consistantly grouping 1/4 inch at 100yds
Anything to worry about do you think?