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Post by Ice on Feb 3, 2017 22:59:02 GMT -5
How "clean" do primer pockets need to be?
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Post by linebaugh on Feb 4, 2017 10:03:34 GMT -5
I assume you are talking about centerfire cartrides or priming modules? I have never cleaned a primer pocket in my life... ever. If the tumbler does not get it out then it just gets reloaded over.
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Post by Ice on Feb 4, 2017 10:17:57 GMT -5
I assume you are talking about centerfire cartrides or priming modules? I have never cleaned a primer pocket in my life... ever. If the tumbler does not get it out then it just gets reloaded over. Centerfire..yes. I am only going to "hit the high spots" and make sure the flash hole is open/clean. Some clean extensively and some don't. I am not a competition shooter and only load for hunting and plinking. |
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Post by Richard on Feb 6, 2017 9:55:41 GMT -5
Yes, I am a competition shooter and clean all my pockets except for maybe some generic .223's for my AR. That's the pile of mixed manufacturer casings. (mostly military range brass). The theory is that you want the inside corners to be square to the bottom and side wall of the pocket so each new primer seats evenly. In competition cases you also want the depth of the pockets to be the same. Every time you fire a case you leave carbon residue in those corners since the primer initially backs out a bit when fired; this allows the carbon to collects there. And yes, I even do it with the modules. When you start looking at PRECISION shooting, you look to ALL those little things collectively contributing to the end results. Things like the RCBS prep center and other homemade devices can speed this and other prep work. If you ever get bitten by the accuracy bug, you will understand.  If your having fun and killing critters, than don't sweat the small stuff! |
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Post by nippernut on Aug 29, 2017 16:13:10 GMT -5
i bet if someone tried some Cleaned v Dirty id take the bet on "wouldn't be a measurable difference in group size
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Post by elkman1310 on Feb 5, 2019 9:19:42 GMT -5
You would loose that bet. Primers and primer pockets can mean the difference between shooting good groups and match winning small groups. As a 1,000 yard shooter we do not leave anything to chance and having dirty primer pockets is a real bad idea. All you primer pockets and flash holes have to be of the same size and depth, The pocket needs to be flat across the bottom of the pocket so when you seat your primer the anvil gets compressed the same every time.
Your looking for consistency. I weigh each primer and sort them by weight. I cut all my primer pockets to the same depth and I reamer all the flash holes with a Sinclair flash hole tool and then I seat my primers with a good sensitive hand priming tool probably the best is the KN with the dial indicator which gives you the depth of the seated primer.
If your just reloading for hunting or punching steel plates then going to these bench rest type measures isn't necessary but if you want to compete and try and place or even win a relay or match at a long distance 600 yard or 1,000 yard match then it is absolutely needed.
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