1x fired brass , split necks

WeiserBucks

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Aug 16, 2016
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I recently bought 200+ pieces of 300 Norma 1x fired brass that came from factory ammo. Upon inspection, 19 of them had split necks , some worse than any split necks I've ever seen .
The brass came from two well respected members of another forum and I've confirmed that they are 1x fired.
Any idea what's going on here ? Is the 300 Norma somehow prone to split necks? I have zero experience with the cartridge, just getting started.
 

MagnumManiac

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Feb 25, 2008
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I recently bought 200+ pieces of 300 Norma 1x fired brass that came from factory ammo. Upon inspection, 19 of them had split necks , some worse than any split necks I've ever seen .
The brass came from two well respected members of another forum and I've confirmed that they are 1x fired.
Any idea what's going on here ? Is the 300 Norma somehow prone to split necks? I have zero experience with the cartridge, just getting started.
I have some once fired and UNFIRED 264WM Winchester brass that would split either on the first firing or when seating bullets after being sized.
As soon as this happened, I annealed the lot (300 cases) and haven’t had a problem since. I even had 3 split as they were sized and the expander (dry lubed Forster) was pulled through, the difference between neck before expander is only .0005” with this die!

I guess sometimes we’re just unlucky.

Cheers.
;)
 

turkn8r1

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Sounds like maybe the annealing done originally wasn't sufficient/efficient. I would never expect that from Norma but hey we all need a Mulligan every once in a while. And if they came from 2 different folks then I'm assuming they were fired in 2 different guns so that would eliminate a lot of the reasons why. I would either scrap them and start over with new or do a very close inspection of each one anneal the good ones and start at minimum for the first loading in them.
 

WeiserBucks

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I've never had an issue with any 1x fired brass from any member of any forum, but the first piece I pulled out had a split from the mouth clear to shoulder/body junction. Makes my agent orange act up .
 

Varmint Hunter

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Based on the information you provided, I would get them annealed before doing anything else. Either that or send them back.
The seller had an obligation to advise you of the problem and that 10% of them were unusable.
 

WeiserBucks

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I've reached an agreement with the sellers , one batch was annealed after the 1st firing and still split . Makes me wonder if this is a rare instance or if there's a problem with 300 Norma brass. I've been using Norma brass in other cartridges for years with great success.
 

elf

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Nov 26, 2017
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Many sellers allege 1x firing, when brass has had many more. The chamber those came from is smaller than yours and they split upon expansion. I would do a cerro cast to find your rifle chamber dimensions and then compare.
 

WeiserBucks

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How do you know that the two chambers the brass was fired in are smaller than mine? I've never fired any of this brass , my chamber hasn't been cut yet .
 
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