Case Polishing

[257Roberts]

While case polishing is probably not super important in performance, it sure does make brass look better.
I am currently using a Midway tumbler, Midway brass polish and walnut hull media. I am wondering what it takes to get brass to really polish well? Maybe I am not using enough polish...maybe not enough time...??? I still get carbon fouling in the case neck area, or the case just is not very "bright".

I also have a small collection of cartridges I use to compare and look at. After time in the open air, they become dull, so I hit them with flitz, brasso etc. I am wondering what the affect of these polishes might be on primers? For example, if a person used flitz to polish a sized, non primed case, if some solution got into the primer pocket and wasnt removed, would that be enough to deactivate a primer?

Maybe I am reading too much into this...anybody know roughly what it takes to deactivate a primer?

Curious mind wants to know!

 

[tx_shooter]

Maybe I am reading too much into this...anybody know roughly what it takes to deactivate a primer?

Curious mind wants to know!

To deactivate a primer it takes a decent firing pin strike.

But really - a decent soaking in water will kill a primer.

 

[Atomic_Cowboy]

For what it's worth,

I tumble cases, pistol and rifle, in corn cob media with flitz for about 4 hours when I really want to polish them. I generally tumble first with empty cases and decap afterwards otherwise I get media in about every flash hole, tumbeling doesn't do much for the primer pocket anyway.

30 min will clean them enough to reload,I don't like dirty cases in my dies), but I never run loaded cases for more than 10 min and that is just to get the lube off. Firstly, I have read tumbeling powder like this causes trouble with ignition consistency,might be BS). Secondly, with the added weight of the bullet, I don't believe it is very efficient.

Good luck,
DG

 

[Preacher]

The real problem with tumbling loaded rounds is it can break down the powder granules and that will increase the burn rate, and will get you into trouble if your already on the hot side.. I would recommend it not to be done...

 

[Travelor]

First, you said tool to tumble, but I am assuming you mean a vibrate tool to clean you brass. I used to tumble the brass and it never got shiny clean.

Second, I use corn cob media and Dillon Rapid Polish and it takes a maximum of 30 minutes to get my cases shiny bright. I would suggest you change to corn cob and get a dedicated case cleaning polish.

Clean the necks with a bronze bore brush to get the carbon out and get a Crocagator to clean the carbon out of the primer pockets.

It the above is not clean enough for you, you need to look at ultrasonic cleaning.