I have a pile of once fired Federal Brass. The only way I have segregated this brass is by the fact that the primer pockets have some kind of red around them- something from the Factory. So I have 200 pieces of this nickel plated brass. Cleaned it and resized it all at once. When I prime the stuff, there is no consistency at all. Some of the primers slide right in with little resistance, some feel more like what I have come to consider normal with Remington Brass. I am worried that a primer that goes in with little resistance might be able to loosen up/let gas escape upon firing. I probably wouldn't care, but I am shooting .300RUM which is pretty high pressure. The primers are not all seated to a uniform depth either- some of them seem to go in much deeper than others, none are high, but many are low. I picked out some of the "good" ones and loaded and shot them. They were fine. Any thoughts? I didn't uniform the pockets or anything, just cleaned them. I can afford to throw away the whole lot of them and I might as well at this point since I am afraid to shoot them.