If you're not sure what I'm trying to say, asking for clarification would probably be a more constructive use of your time vs. demeaning. 7.62x39 is indeed a much heavier load than 5.56, .223, .22LR, and various common handgun rounds to the average person. That's what I was comparing it to. It's no 30-06, but it's a medium-large round. If you have any empirical evidence that "most" hunters consider it a weak round for deer, I'd be interested to see it, but this sounds more like your feels.
The difference between a fully automatic AK-47 and a semi-automatic AK-47 is not surprising to me at all. The AK-47 fully automatic is indeed different from the semi-automatic. Just because "that's it" doesn't mean it's not a very meaningful different, if anything with regards to legality. These variants also indeed get offered in different rounds. A domestic AK-47 variant does not guarantee it's shooting 7.62x39.
I also fully understand the ammo portion. It was very poorly worded. I intended to state that the round is indeed freely available and legal for semi-automatic rifles, but your average person is not going to be using it fully automatic AK-47s.
As far as my time with guns, I don't think I agree with you given how much time I know I've had, but you're free to disagree. It's just a forum after all.