Originally Posted by jamesob
take 2 pieces of scotch tape, place it on the back of the case, insert the round onto the bolt. if it doesnt close all the way, your fine. if it does close your chambered to deep. its not the most precise way but it does work.
I don't know how many times we have to go over this. On a cartridge that head spaces on the shoulder tape should never be used as a head space gage.
You have no base line dimension, you have no idea how far under or over size the case is. It's also a safety issues. If you did this as a professional gunsmith and something happened to the rifle. You are liable for any damages and or injuries.
$60 for a set of gages in the most common of calibers is cheep insurance