Odd gouge on shoulder, anyone seen this sort of thing?

[Chris Edmondson]

I was reloading some rounds today when I noticed a piece has a odd-looking gouge on the shoulder, wondering if anyone has seen anything like this?

It's a piece of Lapua 6 BR Norma, maybe 4 times fired.

Thanks.

 

[Straightshooter1]

I was reloading some rounds today when I noticed a piece has a odd-looking gouge on the shoulder, wondering if anyone has seen anything like this?

It's a piece of Lapua 6 BR Norma, maybe 4 times fired.

Thanks.

View attachment 1691564

That's not a "gouge". . . it's a fold. Apparently, there was so much of the shoulder being compresses that it could only fold like that.

. . . maybe because it wasn't annealed, or annealed to much???

 

[AMG04]

I had brass fold/crimp like that when I first tried to push the shoulder back on 7SAUM to form 7SS. Compressing too much brass and it doesn't have anywhere to go.

 

[mudduck]

I was reloading some rounds today when I noticed a piece has a odd-looking gouge on the shoulder, wondering if anyone has seen anything like this?

It's a piece of Lapua 6 BR Norma, maybe 4 times fired.

Thanks.

View attachment 1691564

That is a defect when formed. I’ve found several like that.

 

[Clancy]

I’ve seen it a couple of times.

 

[Chris Edmondson]

Needless to say I culled the piece.

 

[moondog]

I've had a few that have had that same crease. All on some sort of improved case. I chalked it up to imperfections.

 

[Jeff Porter]

I have seen a couple in the Lapua 6BR just like that. Culled them.

 

[rwj]

I have seen a couple in the Lapua 6BR just like that. Culled them.

New/unfired?

 

[Kracken McGraw]

There was another whole thread about Lapua brass having this problem not too long ago.

 

[Albany Mountain]

I had a couple, new from Lapua. They replaced.

 

[6BRA]

I had 1 in my last batch of hydro forms.
I shot it in the BRA and it hasn't been seen since.

 

[mgunderson]

Happens from time to time with all the manufactures. Amazes me how I find something like this after a few reloads. You would think that a reloader would see stuff like that for as much as we handle the brass.

 

[Allen Corneau]

We had a 6-page thread about this very subject earlier this year. Lots of good info, but also a bunch of BS as usual.

Thread 'Weird Dents In New Lapua 6BR Cases'

Feb 9, 2025

I broke open a new box of Lapua 6BR brass to make up 100 new 30 BR cases, and found these two in the mix. This is a pretty violent dent.

• jackieschmidt

• 
• 
• 

 

[Jeff Porter]

New/unfired?

Yes

 

[Mark W]

New/unfired?

I’ve saw it with new unfired Winchester brass a few times. Never with Lapua though. Sounds like it a thing now.

 

[swd]

Give Lapua a call and they will replace it. Every one I've had like that failed right there.

 

[CJ6]

Happens from time to time with all the manufactures. Amazes me how I find something like this after a few reloads. You would think that a reloader would see stuff like that for as much as we handle the brass.

You would think it would blow out upon firing the first time.

 

[jrb06]

He is quoted

It's a piece of Lapua 6 BR Norma, maybe 4 times fired.

So I would assume this is not new out of the box as everyone is jumping in on. If it is resized I would assume this is more related to the over lubed or brass movement into the shoulder area.