I think Halfmile is about right on the time frame. I think it was around the mid to late 80's, but I could be off by a decade or so. There were factory duplication loads listed for 452AA powder at one time and also a Winchester AA Plus powder manufactured sometime around that era.
85TTR I load them all the time and have never had a problem but it the end its up to you. If you do load the AA hulls just check your BBL for base wads after you shoot every time and you will be fine. I am not saying it doesnt happen but I have never seen or talked to anyone that has had it happen.
Thanks to everyone who helped answer my question. I would have thought they were newer from condition. Guess since they are this old useless to try to hope for a good crimp. Should look pretty to throw 1/2 gal of gas into barrel and light off.