Thread: Headspace gauge/ case head separation

Originally Posted by grandpamac

Greetings all,
I struggled with setting headspace on my brass for decades. For years I neck sized brass, which brought its own set of problems, and meddled with setting the die of the shell holder with a feeler gauge. Nothing, I repeat nothing is half as convenient or accurate as using the Hornady headspace comparator together with the Redding Competition shell holder set to achieve consistent headspace on my sized brass.
Regards Grandpamac.

Yep redding comp shell holders are absolutely fantastic
The other way to do it is find a tight ish bit of fired brass and take the decapping rod out of your die.
Start sizing with the 10.000 holder and work down 2.000 at a time till you have bolt closing tension you require.
Alot of my cases of diferenf chambers sit at 6.000 which means if I didn't use them I would have between 6.000 to 7.000 head space which for me fixed case head separation I was having problems with.
For those of you who just undo their die a fraction at a time it has been proven to be quite an inaccurate way to gain exact replication of head space.
A redding podcast explained why it is so!

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