What did you do in the reloading room today?

[Snuby642]

I'm loosing my mind. Cleaned up my brass that I caused the mouths to become wicked/peend using my giraud. Also switched to walnut vibratory cleaning. Lot less cleanup I will say.

But....

I noticed several cases have it again. I've already trimmed these cases below spec to clean them up. What now? I have no idea how this is occurring.

Sounds like your case trimmer is set up or adjusted wrong.

Peening, even from wet tumbling, isn't the result of the media being used. It's the cases themselves banging against each other. The amount of brass to media ratio and the amount of time being tumbled that's a play. Overload the tumbler with brass and that brass is going to bang around against each other a lot. Reduce the amount of brass you're tumbling at one and try to reduce the amount of time tumbling to a minimum to get the results you want.

I have put 250 rounds of 223 into a vibratory tumbler with walnut media to overflowing, only worries are wearing out the motor or making a mess. Too much brass in the vibro and not enough media?
Fill it to recommended max and let it ride.

I have let brass "tumble" overnight just to see how shiny it would get. No preening or other defects noted. It didn't look much better than a 4 hour run.

How do people come up with so many problems with one of the simplest tasks of reloading?

The tumblers wet or dry come with instructions and you can see video online. Then as allways get plenty of help on this forum.

Take a few pictures and let the guys see what's going on.

 

[Im2bent]

By any chance are you annealing the fuck out of your brass before tumbling?

 

[Snuby642]

Ya that might do it if you ignored instructions and conventional wisdom.

A couple of my favorite brands of range brass are very soft to start with but never had problems with tumbler.

I noticed some problems with trimming the soft stuff with a few different trimming devices causing chatter.

You have to slow the feeding down or try another device. Hard brass trims nice and clean.

 

[HemiPowrd]

Loaded 50 rounds of 300 PRC ammo for a semi long range competition as perfect as I can make it. Weight sorted everything and then weight sorted the loaded rounds.