Is This The New Norm? Primer Cup Separation

[Letus]

Did you clean your brass before decapping them? I don't think few bad ones justify another step. (Sounds like gun control to me )

 

[umrek]

I ran everything through a wash with brass cleaner and then a tumble, so it was all clean.

 

[ageingstudent]

I ran everything through a wash with brass cleaner and then a tumble, so it was all clean.

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I've had a few cases do that over the years, but never that many all at once. I would guess it's just cruddy or tight primer pockets. I've never had .38 do that but a few .40S&W and .223. Never noticed if it was brand specific.

 

[Ownerus]

I'm gonna say weak primer cups. Back in the day Dad and I deprimed lot of USGI .30-06 brass. HEAVY crimp. Standard decapping pins just broke. Dad made a special decapping press out of grandpa's old bottle capper to handle them. Can't get a tighter primer pocket than that. None of the primer cups ever failed like the OP shows. Metallurgy can be done wrong even in the 21st century.

 

[umrek]

I'm gonna say weak primer cups. Back in the day Dad and I deprimed lot of USGI .30-06 brass. HEAVY crimp. Standard decapping pins just broke. Dad made a special decapping press out of grandpa's old bottle capper to handle them. Can't get a tighter primer pocket than that. None of the primer cups ever failed like the OP shows. Metallurgy can be done wrong even in the 21st century.

I'm tending to agree.... they didn' require anymore force than the other 1000s I did at the same time.

 

[DLS]

Are you using a dedicated decapping die for your de-prime step? A decapping pin should have a smooth radius on the tip. Any edge, shoulder or other unsmooth section can cause this.

 

[umrek]

Lee combo resize/decap die....oddly enough it actually was a brand new pin fresh out of the package.