I came across 100 once fired Win .223 cases, that I oversized by .004 from what I normally size. I'm thinking of scrapping them but maybe I can load them, shoot, and let them stretch out and resize the to my usual setting. Would they stretch out too much if I do this one time? They would be shot out of my AR carbine with 55 FMJs then later 69 BTHPs through my match rifle. Thoughts?