I got myself the Forster case and cartridge inspector that checks case concentricity and bullet runout. Grabbed a handfull of loads I did a while back and tested bullet runout. First 3 perfect with hardly any movement on the dial. Next 7 varied from .005 to .007. Next lot gave me .001 to .003. The question now is how do I rectify this runout. Read somewhere of someone having drilled a hole in a block of wood slightly larger than the particular caliber, then inserting the load into the hole and manipulating same until no further runout. I need a more "scientific approach" Any suggestions, what do you gents do?