Case gauge

[kestak]

Greetings,

I have never used before a case gauge. My chamber was always my gauge.
I just bought a case gauge for .223 and I am wondering how to use it exactly.

Do I simply drop my round in it and make sure the bottom of the round is flush with the case gauge?

Thank you

 

[Slamfire]

I don't know your brand, but I have Wilson type gages.

The bottom ledge represents the minimum case length.

The upper ledge represents a maximum length.

Wilson gages are cut large between the shoulder and the base. It only measures length. It will not check for an interference fit if your cartridge is too "fat".

However, you can drop a fired case in a Wilson gage and be able to determine, within reason and measuring error, your chamber headspace.

When I have dropped in chamber headspace gages, the Go and No Go gages correspond exactly with the upper and lower ledges.

On the other side of the gage is case OAL.

For AR's, I just size to gage minimum. Works fine in all my different match rifles and the one rock buster.

 

[Historian]

I have a .223 Lyman case gauge. I use it for checking headspace and case length after resizing. It's one of the most useful pieces of reloading equipment that I have. You can use it to check case size and check your finished rounds so you will know before you go to the range whether or not you're going to have problems chambering rounds or jamming in a semi-auto. I check about every fifth case after I size and about every tenth round after I seat the bullet. Hope this helps.

Historian

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