I went through basic training in 1969 in a hurry to get bodies over to the South East Asian area.
If you got more training than I did, I'm glad to hear it. I think that's great.
Still and all, all the training you and I both received in the Marine Corps didn't teach either one of us to shoot birds or intimate knowledge of commercial self-defense ammunition.
So, neither of us are going to be the ultimate answer man.