This reloading tool measures your EXACT chamber clearance / headspace from the small 22's up until 378 Wby Mag. No need for different caliber inserts, or struggling to attach it to your vernier / caliper.

Due to the brass standing on the platform it is MUCH MORE accurate and easier to use than the normal tools attached to verniers.

Our patented Digital Headspace Gauge shows the exact clearance (at the shoulder) that YOUR handloads will have in YOUR particular chamber.   Remember, a fired case is like a perfect casting of your chamber (except for break-open actions).   Simply calibrate this gauge to your chamber by inserting one of your fired cases, and press the "zero" button.   Then insert one of your handloads, and the gauge will display your chamber clearance.   This is the most accurate way to adjust your die height - without guessing.

It is common to find handloaders pushing the shoulder back way too far.   The shoulder of your handloads should be set back no more than -.003" for a perfect fit.   Reloaders that run their shellholder into the resizing die are often pushing the shoulder up to .016" too far in some chambers.   Those shooters that just resize the neck also need to know "how far" to bump the shoulder for a reliable chamber fit.

This gauge improves accuracy by making your handloads fit better than any factory ammo, and it also reduces case run-out.   It provides longer case life by helping to reduce case stretching, and that eliminates the possibility of case head separation.   This gauge can also measure bullet "jump" to the rifling.   It doesn't require special tools or a collection of bushings to operate it, and the gauge provides uniform downward spring pressure to provide the most consistent readings.   You can now determine the most accurate height setting for your resizing and seating dies to make perfect fitting handloads.   This gauge also compares OAL and case length at the rate of about one case per second.

Resizing dies are designed to make handloads fit inside the SMALLEST chamber of a particular caliber.   To make things worse, chambers are always made to accommodate the LARGEST factory ammo made anywhere.   Machinists call this "tolerance stacking".   This means that your handloads usually have quite a loose fit in your chamber.   The next time you put the crosshairs on a long range target, you have to ask yourself "If my handloads are small enough to fit any chamber in this caliber, and large enough to not get ripped apart when fired . . . . is that really close enough?"