Odd Neck Split

[recoil junky]

I've never seen one like this. Found it after sizing a batch of 35 Whelens before they hit the trimmer.



I'm sure there are many like this, I just thought it "odd". Mostly I get longitudinal splits at the shoulder/neck juncture or in the neck itself and only one ever case head separation.

RJ

[gitano]

I'm not a metallurgist, and I don't even play one on the internet, but... that looks to me like plain ol'
 metal fatigue, with emphasis on "old". Finally just wore out. But, like I said, I ain't no metallurgist.

Paul

[recoil junky]

Paul, you should also remember the day the earth stood still when I had the "incipient case head (partial) separation"? No? Me either, but I still have the case. :laugh:

Yeah, it's "old" 25 years at least I have 30-06AI brass that's older than I am if that means anything in the grand scheme of things.

I'm getting ready for HB and the girls to come deer hunting and I want to have a few spare rifles ready in case tHEy forget ammo or something

RJ

[recoil junky]

I didn't look at the headstamp either, it may be some of the "odd" .270 Win brass I converted into 35 Whelen.

RJ

[gitano]

Again emphasizing my lack of first-hand knowledge on metallurgy, I HAVE READ AND HEARD from reputable sources, that brass hardens 'naturally' over time. The point mostly being that if one were to buy old "new stock" brass, one might be well-served to anneal the cases before FIRST loading. I would assume that some cases (thin-necked ones like 44-40 and .22 Hornet), would be more susceptible to this phenomenon than cases like '06s, 7mm Rem Mags, etc.

Paul

[recoil junky]

I've heard/read the same thing. I know it happens with cast bullets too.

I was toying with annealing them and should have because it won't hurt one way or the other.

RJ

[recoil junky]

I think (dangerously) that this (old brass) might also contribute to the whole "bullet welding to the neck" phenomenon that "people"  talk about.

RJ

[j0e_bl0ggs (deceased)]

Again emphasizing my lack of first-hand knowledge on metallurgy, I HAVE READ AND HEARD from reputable sources, that brass hardens 'naturally' over time. The point mostly being that if one were to buy old "new stock" brass, one might be well-served to anneal the cases before FIRST loading. I would assume that some cases (thin-necked ones like 44-40 and .22 Hornet), would be more susceptible to this phenomenon than cases like '06s, 7mm Rem Mags, etc.

Paul

Deffo age hardens, had 15+year old 'new' brass and in the first 50 loaded lost a half dozen to split necks, annealed the rest and no problems!

[j0e_bl0ggs (deceased)]

recoil junky, any chance we might get you to use the 'Hotlink for forums' rather than the thumbnails from postimg please?

[recoil junky]

Nope.  

RJ

[recoil junky]

Happy NOW!!??

:cens:



RJ

[j0e_bl0ggs (deceased)]

Just saves every one 'clicking through' no need to take umbrage, I did ask nicely.