RE: Wildcat loads, I own two of those but they are single shot deals and NOT what I would choose for either self protection or any type of armed conflict. They are fun and good for hunting and stuff like that but not practical for anything else.
RE: Reloads for semi-autos or pump action rifles, that's what's known as a "full length resizing". With bolt action rifles you only have to resize the neck where the bullet is pressed in. On the semi-autos though the brass has to slightly undersized to basically be able to fall into the chamber.
Actions on both the AR and the AK are sloppy as hell, ie, the bolt carrier and other moving parts fit REALLY LOOSE and the AK is the worst of the two. But they work though and that's all that matters. :wink: