Sinclair - Bump Gauge Insert Micro3X Concentricity is enhanced by the

Concentricity is enhanced by the ability of the resizing bushing to self-centre on the case neck

Pronounced Boat Tail Design: Provides excellent flight characteristics over a range of velocities

Set up of an expander die has not been easier

The result is a bullet that flies true

Sinclair - Bump Gauge Insert Micro3X Concentricity is enhanced by theSinclair Bump Gage Inserts are used to measure the amount of case shoulder bump when setting up full length sizing dies. Rather than measuring to the datum line, these gages indicate off of the shoulder of the case to get a better, more easily assessable measurement of how much you are actually sizing your cases They can install in either of the Sinclair comparator body (XL) or Hornady Body and are machined to fit particular shoulder angles of