On many of my handloads copper has flaked/scratched off the bullet during seating- it is deposited right on the mouth of the case. Am I doing something wrong? My gut says that the flakes are going to end up in my barrel or chamber and I am going to have a harder time cleaning, also this can not help accuracy. I have tried resizing with 2 different dies, though my finished case neck size is a little bit narrower than the books say it should be. what gives- is the brass shrinking back to a size much smaller than it should be? Thanks.