Rajun Cajun OAL gauge

I got one from Randy a couple years ago for a buddy that saw mine, not sure if he still makes them.
Randy's gauge is a little different from the Sinclair gauge, with Randy's all the measurements are from the muzzle, the Sinclair tool takes them from the other end by removing the bolt and using a action guide.
With Randy's you measure right to the bolt face and tip of the bullet,
With the Sinclair tool you measure to the base of the bullet and the base of the cartridge.
I like Randy's version better but I'm sure they both work
 
Interesting. Randy gave me the one I have and told me Sinclair sold the exact same one. Never seen one that came from Sinclair though.

- DAA
 
has anyone tried both the breech(sinclair tool)and muzzle/bolt face methods and gotten the same measurements? I guess I not understanding after watching the video how the cartridge oal was established,cartridge base to datum plus bullet length?
 
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