I use a lot of Federal brass for reloading, mostly for .308. I have noticed that the primer pockets in this brass seem to get soft after a few loadings and the primers are going in easier. Sometimes it takes almost no pressure to insert the primer in the pocket. I have been using Federal 210M primers. I have not noticed this happening with other brands of brass. Have any of you ever experienced this with Federal brass? Should I be concerned about the primers staying in place?