I read the whole thread (good info here btw) and have an observation and a suggestion for you OP-
Observation - you are not using stick powders because they do not meter well in your progressive press (edited below)
Suggestion - do not use a progressive press when handloading 1000 yard ammo. If your equipment and techniques are not conducive to using a particular component that you would like to use, might it make sense to change your equipment and/or techniques rather than rule out that component?
Last edited by tkglazie; December 28, 2012 at 06:39 PM.