Well I have never called myself a master machinest, an I never will. I had owned 70 plus firearms, so I am experienced with them. I've shot dozens of assorted firearms through my association to various shooting clubs, so I'm experienced with them. The Army that I served in trained me in at least another dozen assorted firearms, so I'm experienced with them. I can speak from experience under a wide variety of firearms that have been utilized under every weather condition imaginable.
I don't consider myself a survivalist "guru" that some do. I've had experience living in the bush for weeks and months at a time. So I can speak from that experience. Some people here believe in fantasy, I don't!