Cleaning brass ... critical to accuracy?

A word about Stainless pins..

This method is amazingly fast. I have cleaned 250 08 cartridges in under 40 minutes.SPOTLESS inside and out! All you other pin guys.. try it... The less time tumblig the better it is for your brass. I have also done 600 223 cases in about 2 hours. What you must pay attention to is what the tumbling does to the throats of your cartridges... for Shtznggls.... Observe the throat of a cartridge (that's been trimmed and chamfered) using a 2-3x's jewelers loupe before you put it in the cycle.. then afterwards observe it again You will note that he mouth of the cartridge gets peened round. The cases dont seem to lose any length.. but the do get rounded. Chamfering the inside edge afterwards is always a good idea.

What I like is a cartridge that I can see down into when reloading. A clean case prep'd in a stainless tumbler leaves the cases golden on the inside.. This goes a long way towards confirming that a case has a charge in it or not while its in the reloading block.
thats my two cents...

oh yeah... and carbon... its one of the most abrasive substances out there... Especially when under pressure. like from a press and die. I cut a lot of carbon fiber material. It EATS tungsten carbide for lunch.. Diamond bits (also carbon based) are best but stupid expensive. So for me.. a clean shiny cartridge not only looks nice, it extends the life of my gun(s) and tools
 
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Clean brass is pretty, but I doubt very much that it has any significant effect on performance.

I have watched BR shooters use the same 10 or 20 cases over several times with nothing more
than a quick wipe with a cloth. Their groups were very small, beginning and end.

If it makes you feel good, fly at it, but it is not necessary for small groups or consistent velocities.
D.
 
This is the part I forgot to add to my spew. +1

Eagleye said:
Clean brass is pretty, but I doubt very much that it has any significant effect on performance.

I have watched BR shooters use the same 10 or 20 cases over several times with nothing more
than a quick wipe with a cloth. Their groups were very small, beginning and end.

If it makes you feel good, fly at it, but it is not necessary for small groups or consistent velocities.
D.
Click to expand...

clean is only important to the outer case. powder and the back of a bullet will never know if the case is clean or dirty inside..
 
eagleye said:
clean brass is pretty, but i doubt very much that it has any significant effect on performance.

I have watched br shooters use the same 10 or 20 cases over several times with nothing more
than a quick wipe with a cloth. Their groups were very small, beginning and end.

If it makes you feel good, fly at it, but it is not necessary for small groups or consistent velocities.
D.
Click to expand...


x2...
 
RE: Stainless pins ...this will probably never be an issue...BUT...a good idea to check to make certain a pin does not get missed in the case. A friend had an issue resulting in a scored bore, that occurred when a decap pin went unnoticed in a case. I suppose the same result could occur with stainless pins?
 
I don't get the fascination with super shiny brass. It gets dirty again the next time you go shooting - literally.

I had a stainless tumbler (Frankford Arsenal) for awhile and it sure made the brass shiny and pretty. However, you have to look at each piece to make sure a pin isn't stuck in there and it has to be dried. There are no time savings or benefits that I can tell.

Throw it in a vibratory with some walnut media for a couple hours. It still looks pretty enough.
 
1 point no one has mentioned, that overly shiny brass... hides defects better then a dull case. Harder to see incipient cracks or stress lines when the case is bright and shiney.

For those going full throttle on the ammo, that is one safety check I would not want to loose.

YMMV.

Jerry
 
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