My, what fast responses! Appreciated!
Seating die matches bullet noses--it was specifically chosen for this. Seating die is not crudded up. Press-handle-hand pressure DOES make a difference; I try to be conscious of this and be consistent.
Cloudpeak--does this +/- 0.004" variation in COAL cause any change in POI?
Will check bullet dimensions.
Again, thanks to one and all!