Hornady Lock-N-Load Ammunition Concentricity Tool - $109.99

Hornady is constantly developing ways to improve accuracy, and this is the first tool of its kind on the market that both identifies and eliminates bullet runout the tendency for bullets to be out of perfect alignment with other components of the cartridge. Simply place ammunition in the tool, roll it, identify any bullet runout, and use the dial indicator to adjust to zero. You can even use the tool to measure and correct factory ammunition. By truing up the alignment of a cartridge, you'll enjoy improved accuracy and performance from your ammunition. - $109.99