i use a digital caliper. some brass, like remington that is nickel plated, is very resistant to change. When I put it through my factory crimp die, it glides in and out like nothing happens. other kinds of brass, is different. I can always tell which is remington brass like this.
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1. The gun is always loaded.
2. Never let the muzzle cover anything you are not willing to destroy.
3. Keep your finger off the trigger unless you are ready to shoot.
4. Be be sure of your target and what is beyond it.
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