I've been a fan of the AA CF hull for years. But recently I wanted to load some 00 buck loads and used some of the new AA HS hulls and discovered the construction difference. Also found the Rem Gun Club hulls to be like the AA CF's. These have all been loading just like my old AA CF's. The only problem I've run into with the newer mfg'ed hulls is the Rem STS. My W-W 209 primers will not stay in the hole. They slowly work out just sitting on the bench. I am glad to know that the new hulls can be used when my stash of AA CF's run out.

Art
In life you will find that constants aren't and variables won't.
Life is like a sewer, what you get out of it depends on what you put into it.