I have been reloading for years, however I am self thougt. The problem I am having is I have determied the maximum overal length of case for my TC encore 22-250 and have set my Rock Chucker press using RCBS standard dies to 0.003 shorter than max using the ogove to base of case measurement. When I seat many to the bullets using this setting the length comes out within 1 or 2 thousants but several will also come out as much as 0.005 too long and one even came out 0.008 too long. I have put them back in the prees and made sure I bottomed the stroke out but they remain too long. What gives, I can't figure it out. This seems to happen at random but obliously I can't accept this inconsistancy.