Any ideas?

[338 dude]

I've been shooting this load in my rifle for several years it is proven,but after coyote hunting the other day I noticed this.It is the one and only time I've ever seen it happen.

 

[Mikecr]

I'm missing the problem here

 

[C.O. Shooter]

Seeing some cratering.

 

[nealm66]

The top one looks dished in

 

[nealm66]

Never seen it before

 

[338 dude]

Yes I know slight cratering firing pin has not been bushed,I'm talking about the dish appearance of the first case something I've never seen before

 

[338 dude]

S and Bprimers And the dish is actually deeper than it looks in the picture

 

[C.O. Shooter]

Was it like that prior to?

 

[338 dude]

No .Also no stray shots when I was hunting I didn't notice anything until I went to put away the brass

 

[nealm66]

Are those Winchester primers?

 

[338 dude]

The top one looks dished in

Exactly

 

[338 dude]

Are those Winchester primers?

S&B

 

[nealm66]

How long have you been using those ?

 

[338 dude]

How long have you been using those ?

At least five years