NOS Brass and when to anneal.

[LVLAaron]

But do you anneal new brass before loading the first time ?

No. But if your stuff is older and potentially unknown origin, running an anneal cycle on it wont hurt anything.

 

[Benchrest Braxton]

great article from amp

"Age Hardening" of Brass | Induction Annealer | The Latest Research | AMP

View the latest articles from AMP Annealing. Get tips and tricks from our R&D. Here we upload articles to provide your the best possible information on innovations in the annealing process.

www.ampannealing.com

but like others said, there is ZERO harm in annealing again to be sure

 

[CJ6]

No. But if your stuff is older and potentially unknown origin, running an anneal cycle on it wont hurt anything.

I ordered it through a local GS and it was in factory Remington 20 round boxes (marked unprimed cases) which they are still in , all same lot.

 

[M-61]

Another post that I would have loved to read ‘riflewoman’s’ response to regarding aging.

 

[CJ6]

Just wondering out loud and probably silly but is it possible the chamber is a little on the big side?

New (unsized) necks are .310 ,loaded are
312, fired .315 measured with calipers.

 

[10XSHOOTER]

Had the same problem with Remington 6.5 Rem mag brass. Bought 500 rds. First firing over half split necks. Think Big Green had a problem. I don't shoot any Rem Brass anymore!

 

[CJ6]

I'm going to anneal 20 cases and see what happens. I'll load with the same components as before and check EVERY CASE. We'll see what happens.

 

[kiwijohn]

I have two lots of aged brass, one is CAC ( colonial arms company) made in the late 70's or 80's) It had been stored away( but was several times fired) I annealed it all and its great brass that I am happy to have given a second life to. None of it splits at the neck

The second lot is some "92 Palma brass that was once fired ( probably in 1992 at Raton) I have annealed all of that but not shot it yet.
When it starts to get used in heavy 308 loads later this year I will know if it was a good decision.
I believe ( my opinion) that brass hardens as it ages.... maybe its to do with the tension on the neck of loaded old ammo.
I would anneal what you have and see if the issue goes away.

 

[CJ6]

See post #27.

 

[Homerange]

I have two lots of aged brass, one is CAC ( colonial arms company) made in the late 70's or 80's) It had been stored away( but was several times fired) I annealed it all and its great brass that I am happy to have given a second life to. None of it splits at the neck

Pop had friends that worked at CAC in Auckland at those times. We got several 20 boxes of 308 2nds.....
Some had dented cases but they all tipped over deer.

 

[Webster]

Yes, brass does age harden. How much over a given time depends on the make up of the alloy and the environment it's stored in (chemicals that might be in the air).

What's your source of info? I would love to be proven wrong.

 

[NZ_Fclass]

That is a head-scratcher. Does brass harden with age? I don't know.

I anneal all brass, except Lapua, before the firat loading. I jyst got some Nosler for one of the Needmoors, it really needed softening

 

[LHSmith]

There is a reason that cartridge/ brass manufacturers guarantee their products for a finite period. In Norma's case it's 10 years DUE TO AGING.

 

[Webster]

There is a reason that cartridge/ brass manufacturers guarantee their products for a finite period. In Norma's case it's 10 years DUE TO AGING.

More likely a recommendation of lawyers. You cannot guarantee something for ever.

 

[Straightshooter1]

What's your source of info? I would love to be proven wrong.

Sorry I can't quote a source. It's something I learned way back when working on aircraft and studying for an aeronautical engineering degree.

 

[CJ6]

UPDATE..... I annealed 20 cases from different boxes and I had 6 splits (to various degrees). The Remington brass is toast IMHO. I loaded up some of the Norma and will try that this Friday.

 

[Webster]

Sorry I can't quote a source. It's something I learned way back when working on aircraft and studying for an aeronautical engineering degree.

An article I read a few years back said that a big factor that determines if smokeless gun powder deteriorates is how much residual acid remains from making nitro cellulose with nitric and sulphuric acid. The article stated that they have a test to accurately determine the amount of acid in the final product. They add something to some brands of powder to neutralize acid. I’m guessing but I believe they wanted below 0.2% acid.

 

[Coyotefurharvester]

Are you inspecting after bullet seating? Wondering if any cracks occurred prior to firing? If you seat a bullet and than pull the bullet will you crack a neck?

 

[CJ6]

Are you inspecting after bullet seating? Wondering if any cracks occurred prior to firing? If you seat a bullet and than pull the bullet will you crack a neck?

I have not noticed this. I also checked after sizing.

3 splits were full neck, 1 was at body shoulder jct.(short like. 005 long), and 2 about halfway up the neck to the mouth. No scratches or scoring on necks/cases from sizing either.

 

[6BRA]

But do you anneal new brass before loading the first time ?

Why not? You could anneal it with an amp 10 times and it wouldn't get any softer.