I never heard it called a “plunk test” before, but…

It was a pretty good idea. Something I used to do when re-sizing revolver brass all the time.


Took the barrel out of the pistol and “plunked” rounds into the chamber one at a time, a little under 450 times, setting aside the ones that stuck.


And several did.

Now I’ll put a few mags full of the hopefully-good rounds through the Arex, and they’ll either work or they won’t.

About Joel

You shouldn't ask these questions of a paranoid recluse, you know.
This entry was posted in Uncategorized. Bookmark the permalink.

4 Responses to I never heard it called a “plunk test” before, but…

  1. Mike says:

    I load a lot of 9mm, it has its problems. Not least of them being the wide range of chamber sizes causing range pickup brass to be all over the place.

    With my setup I can deal with nearly all of it except that stupid stepped brass chit.

    .45acp is like the easy button compared to 9mm, straight wall case and a lot less pressure. But 9mm brass is easy to find and final cost per round is less for me.

    Hope the cull process works!

  2. Bob Tamewitz says:

    I have a Beretta 81 .32ACP that has an extremely tight chamber. I remove the barrel to perform the “plunk test” everytime that I whip up a new batch of reloads. When I first started reloading for it I had the same problem as you have. I also have a pair of Beretta 85s in .380ACP and have never had that problem in either one.

  3. jed says:

    Well, you know the deal with SAAMI specs and cartridge / chamber diameters. Something is out of spec, just enough. The ammo mfr might have some worn dies. Arex might have a worn chamber reamer.

    I hadn’t heard of the “plunk” test. But I do a cycle test on random finished cartridges – haven’t shot the mattress yet. I like the plunk method better. I’m also obsessive at using the calipers and micrometer on my reloads.

  4. Irving says:

    Some of us have been using chamber gauges for, well, forever. It does involve an additional expense, and an extra step in the post-reloading process – one that a paying customer of reloaded ammo should not have to go through, certainly – but if competition is a good reason for using one, “life critical self defense” probably should be also. Reloaders, either “self” or “commercial,” often use brass of unknown pedigree, and the brand name self-defense ammo manufacturers use newly manufactured brass, but my experience tells me “nobody’s perfect.”

    And, a random thought – Joel, is the 500 rounds you bought have all the same headstamp or multiple headstamps?

    https://www.amazon.com/L-Wilson-PMG-9MM-Pistol/dp/B00OTZN95A/ref=sr_1_7

Leave a Reply

Your email address will not be published. Required fields are marked *