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Annealing brass cases
Discussion regarding the reloading of ammunition and tuning of loads for accuracy
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sniper
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PostPosted: Sat Apr 15, 2006 4:18 pm    Post subject: Annealing brass cases Reply with quote

Of course, I can't find it again, but I read somewhere regarding annealing cartridge case necks, where the person used a candle to heat the case neck and shoulder, holding the case with his fingers, and then dropped it into a pail of water when it could no longer be comfortably held.

Has anyone used this method? Are there any other fairly simple methods that work as well or better?

Thanks.
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shootist
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PostPosted: Sat Apr 15, 2006 5:54 pm    Post subject: Re: Annealing brass cases Reply with quote

Hi Sniper...the best treatise on the subject is VarmintAl's website:

www.varmintal.com/arelo.htm#danger1


I don't know how to make the URL click-able, sorry you'll have to C&Paste.

I've annealed cases for cast bullet loading and used a similar technique to the one above. My cases were submerged to the base of the neck and I used a soldering torch to heat the necks dull red in a dark room, then tipped them over with a rod.


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Crackshot
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PostPosted: Mon Apr 24, 2006 8:43 am    Post subject: Re: Annealing brass cases Reply with quote

Same here! use a old cake pan, set them in water to just below the necks and heat with propane torch, and tip over when red.

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longwalker
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PostPosted: Mon Apr 24, 2006 3:18 pm    Post subject: Re: Annealing brass cases Reply with quote

Isn't the whole idea of annealing to soften the material you are working with? ie Case brass. I can say for sure when you want to anneal steel you heat the material until it glows red, then allow it to cool slowly "no quench".

I bet brass would act the same way.

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Dimitri
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PostPosted: Mon Apr 24, 2006 3:32 pm    Post subject: Re: Annealing brass cases Reply with quote

Longwalker,

I'm not sure about brass but your absolutly right for steels Smile You dont want to quench steel as it will "harden it". Very Happy

Dimitri

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Crackshot
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PostPosted: Mon Apr 24, 2006 4:55 pm    Post subject: Re: Annealing brass cases Reply with quote

Nope, you loose your bet! Ive been annealing brass that way for 18 years and it works fine,
You dont get it glowing red, just when it starts the red glow, then tip into water.

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Dimitri
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PostPosted: Mon Apr 24, 2006 4:57 pm    Post subject: Re: Annealing brass cases Reply with quote

Oh interesting Crackshot, wouldnt have figured that annealing brass would be much different then annealing steel. Shocked

Dimitri

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PaulS
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PostPosted: Mon Apr 24, 2006 9:39 pm    Post subject: Re: Annealing brass cases Reply with quote

Ferrous metal are heated and slow cooled - the slower the better.
Non-ferrous metals like bronze, copper and brass are heated and qhenched fast - the faster the better.
The funny part of this mess is that they both work harden - though bronze, brass and copper work harden much faster. You have a hard time forging non-ferrous metals because they harden and crack with just a few impacts. Steel is much easier to forge because it stays soft enough to work for a lot longer.

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Daveyboy
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PostPosted: Tue Apr 25, 2006 3:10 am    Post subject: Re: Annealing brass cases Reply with quote

Sorry guys...

Why would you want to anneal brass? Don't understand Confused

What are you upto?

D

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Dimitri
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PostPosted: Tue Apr 25, 2006 6:28 am    Post subject: Re: Annealing brass cases Reply with quote

DaveyBoy,

Never done it myself but I belive its so you can get more neck resizes done on the brass without causing too much stress as its softer then before Smile

Dimitri

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Daveyboy
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PostPosted: Tue Apr 25, 2006 6:49 am    Post subject: Re: Annealing brass cases Reply with quote

Scared of putting their hands in their pockets, eh? Tighter than a ducks chuff!

Very Happy

D

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shootist
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PostPosted: Tue Apr 25, 2006 9:21 am    Post subject: Re: Annealing brass cases Reply with quote

Hi Daveyboy....I'll give you my reasons for annealing.

When cartridge brass is repeatedly sized,it becomes work hardened due to cold working of the brass. After about 5 sizings, depending on neck thickness, the necks tend to split. Heating to about 675 deg F will soften the brass to a strain relieved state.
When shooting cast bullets, annealing is recommended to prevent deformation of the cast bullet when seating and also for constant neck tension. Some reloaders discard the brass after seeing neck splits and don't anneal.


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Crackshot
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PostPosted: Tue Apr 25, 2006 9:25 am    Post subject: Re: Annealing brass cases Reply with quote

Shootist summed it up for ya Daveboy!

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Daveyboy
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PostPosted: Tue Apr 25, 2006 12:47 pm    Post subject: Re: Annealing brass cases Reply with quote

So let me get this straight.

Bang, reload, bang, reload, bang, reload, bang, split. Throw it away.

But... If I anneal the cases at a certain point in the proceedings, then the case won't split because the brass has been heated to the red glow stage and then dropped into water.

Which... Will make the brass more maleable so extending the life of the case.

So... I can get more reloads out of the case.

Comprende?

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PaulS
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PostPosted: Tue Apr 25, 2006 3:59 pm    Post subject: Re: Annealing brass cases Reply with quote

Daveyboy,
There is another reason to anneal brass - If I am making 358 Winchester case from a 308 case then at least 1 of 3 will split in the forming process. If I take the time to anneal the cases I get 1 out of 50 or so that will be ruined in the forming process. I then anneal them again so that they are not too brittle to reload. I haven't had to anneal any cases after that but I haven't shot any of those more than five times yet.

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So and So's pages on the internet = NOT reliable loading data
Always check data against manuals
NEVER exceed maximum listed loads
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