I load practically nothing but AA shells and have never heard of the "in-betweener" that Kutter refers to, above. The early three-piece AAs might not have said HS on them but all that were not compression-formed are the same, TTBOMK. Back when there was a lot of talk about this problem, on the Shotgun Sports board, it was reported that Winchester "had made some changes" but so far as I know, AAs are either compression-formed or HS, whether or not they were marked with the HS logo. It seemed to take an awfully long time to determine that the shells that lost their base wads were loaded on P-W type loaders. I remember stories that some were coming out of factory(not reloaded) shells and one guy claimed to be seeing base wads from these shells "laying all over the ground" at his range. Many, if not most, of the stories were very difficult to believe. One other possible cause, IMO, is that there are a few people who love to brag about how they never resize their shells. Seems like a strange thing to be proud of. Sort of like admitting you don't use deodorant....your friends already knew that.
