I have found that most European made primers are slightly larger than American made primers. This is especially true with some 209 shot shell primers. I know once you start using Cheddite 209 primers you have to stick with them since they are 0.002" bigger than American made 20 primers.
With mixed brass in military cartridges such as 9mm and 5.56, you have to watch for crimped primer pockets and remove the crimp.
With mixed brass in military cartridges such as 9mm and 5.56, you have to watch for crimped primer pockets and remove the crimp.