Well, I didn't find it but my future father-in-law did. He bought a house from a family settling an estate. Lost of goodies came with it. Anywho, He came across some primed .30-'06 brass. A good bit of it is headstamped SL53. St. Louis Ordinance I presume. He wants to know if its safe to reload but I don't have experience loading .30-'06. Is there any measurements he can take to ensure the brass hasn't excessively stretchered or is too thin?