Jacket getting sheared

[DocRDS]

Found this last night--in my PPU 7.62x51 brass(I realize 308 is 308, but this was from 7.62x51 rounds, and I do have 'true' PPU 308 stamped brass) bullets were having copper shavings nicked off. It was small, but a bit alarming. I noticed the other brass was not doing this--it was all once fired brass through various rifles. Very tiny flakes/shavings.

Anyone else seen this? Is it a warning sign I should be wary off? I've already throught of going to mandrels as I got 'good' brass for my bolt, while this brass mainly serves my gassers as it gets beat to hell.

 

[Steel head]

Upon seating?
Use a good VLD chamfer tool.

 

[Huskydriver]

Yea with a proper chamfer and properly set neck tension shouldn't happen

 

[DocRDS]

That could be it. Normaly with new brass I do a 'full brass prep' trim/chamfer/etc. As this was once fired and more 'range ammo' than 'accurate ammo' I did not trim/chamfer

I know it may effect accuracy, but it is not a sign of unsafe conditions, correct? (and I am OCD so when I say flakes, obviously as copper it shows up easily and the total amount combined over 100 rounds was probably less than 1 kernel of IMR4064 if that.