This tool identifies and eliminates bullet runout (or wobble). Just place ammunition in the tool, roll it, identify runout and use the dial indicator thumbscrew to adjust.

Features

• Universal centers ensure precise alignment of most bottleneck cartridges from 22 cal up to 45 cal.
• Easy-to-use precision adjustment knobs allow you to true up the runout on any cartridge.
• Sturdy frame can be bolted to your bench

Provides improved accuracy for handloaders, and can be used to true up factory ammo too.