Small rifle primers

[Otto V]

I was just reading a post about 204 loading, one of the replies mentioned using "thick" cup primers. I load for 22 PPC using CCI 400 primers. I notice that the radius on the corner of the primers flatten slightly even with some suggested starting loads. I have a supply of CCI 400, CCI BR4 and WIN WSR. Are these considered "thin" cup primers?

 

[brnolvr]

I'd say no, I have some Remington 6 1/2 that have a warning on them, For .22 hornet 25-20, 30-20, and other low pressure Cartridges.
They have a thin cup.

I have used CCI 400, CCI BR4 and WIN WSR for 6br with no problems and it's up there in pressure range.

 

[Otto V]

Thanks for the reply.