I picked up some Winchester .45 autos at a great price. About 10% of them have a lot of crud around the primers. Present on most but prominent on 10%. Any idea what the dirt could be? Almost looks like tumbler residue.
1st attempt at uploading pics, hope it works.
Thanks for your input.
1st attempt at uploading pics, hope it works.
Thanks for your input.
Last edited:


















































