.223 Case prep over a month X 3000

[diverduck]

So I can prime them and store them? I don't shoot my 270m 303 or 375 that much, would they keep a few years or am I risky they get a slight bit of moisture?

Done it for many years. Never had one go poof when I expected a bang. I do store everything in ziplocks and squeeze as much air out as I can then seal em up.