Winchester 45 colt brass primer seat no go

[Black Powder Bill]

So I have a handful of of W45colt brass and primers will not seat. Like not even start!

I tried 3 different primer manufactures and not a one will seat. The pocket seems to be about .003 smaller than new Rem LC brass.

Any views ideas ??

Bill

[lobowolf761]

Try a primer pocket reamer for large pistol.

[Char-Gar]

You are not by any chance using large rifle primers are you?

[Black Powder Bill]

Try a primer pocket reamer for large pistol.

Did that still to tight.
I reamed and used a case mouth tool and the primers now seat. I also noticed the brass rim is different than the other manufactures. Must have been an outsourced run of brass. It is about 20 pcs.