Years ago I purchased 5000 de-milled Federal cases, all were primed. I full-length sized each case depriming in the process. I saved all the primers in a jar that came with my vacuum sealer. When the jar was nearly full I sealed it up using the vacuum sealer. When I could not and still can not find CCI200 primers I decided to give those saved primers a try. I took 100 primers out of the jar and inspected them. Only one looked hokie so I discarded it. All of these primers seated normally. I put a few in the rifle and snapped off the primers and they fired just fine and upon inspection showed nothing abnormal, I loaded the remaining cases with my proven hand load and all 90+ fired perfectly and produced the same consistently tiny groups that I am used to. Has anyone ever tried this? I had my doubts, but as they say, necessity is the father of invention. They seem to work just fine. And I have around 4800 primers that appear to be okay to use.