1x fired brass , split necks

[WeiserBucks]

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.

 

[Bravo 4]

That sucks! Will an almost 10% failure rate I don't know if I would trust any of them!

 

[MagnumManiac]

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.

 

[WeiserBucks]

These haven't even been sized , 1x fired Norma brass.

 

[turkn8r1]

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]

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]

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]

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]

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]

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 .

 

[jjmp]

Production rushed & not properly annealed .

 

[lyle2231]

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.

For S&G's ..: contact Norma here in the US, tell them the circumstances. First fire and neck failure. See if they will exchange them.
If you don't ask The answer is always no!