Hey John, I'm really sorry man but I somehow just saw this message. I've sold the 22mag btw. I think the 22 mag would be too small for what your describing, a jacket and bibs would either not fit or take up all the room in the 22mag, it is really a small bag. I think I'd go with a frame with cargo panel and lid. The panel is probably the easiest and most comfortable way to hall a climber and you go roll up the bibs and jacket and put them between the panel and climber. The gun bearer is a pretty slick way to carry a rifle and have it accessible quickly. Good luck.