larry willis headspace gauge

[Kryogen]

Since the rcbs headspace gauge in 308 has been BO for months, what do you guys think about this larry willis digital headspace gauge? 100$, works for almost all calibers.

Seems nice? any other suggestions?

 

[bigedp51]

The Hornady cartridge case headspace gauge is cheaper and works for all calibers and can be calibrated to read actual headspace.

Colt AR15 Field headspace gauge, 1.4736

Below, Colt Field gauge in vernier caliper with Hornady case gauge.

You calibrate the Hornady gauge by placing feeler gauges between the red and silver bodies of the gauge and change its length. With the .223/5.56 a .011 feeler gauge was used as the spacer and then the set screw is locked down.

Below fired case from my AR15.

Below, same case after sizing and .003 shoulder bump, the military GO gauge is 1.4646, the NO-GO is 1.4706

Below, new unfired Federal M193 cartridge .002 shorter than the GO gauge.

 

[Kryogen]

who has the hornady headspace gauge kit in stock?