I know that it is a 7mm, based off of the 7mm STW, with the shoulder angle changed I think it is 7mm WRP. I think he smiths his own rifles. Long range shooting is fun, but I hope all those folks who watch it, know of the hours spent to be able to shoot like that. I've heard John say many times on the show, don't do this until you practice, practice, practice. Just buying the video, does not make a long range shooter. Being able to dope wind, accurate rifles, good field technique, and good glass, make it possible. I have been shooting all of my life, and 400-500yds is my comfort zone in the field. Beyond that, I just cant't seem to dope wind or make accurate calculations. But I also live in rural Pittsburgh area. I'm sure if I lived where I could practice I'd get better. So what I do, is shoot at very small targets, for instance, if I want to shoot a deer at 400 yds, I take a 4" paper plate, and try and keep all of my shots in a practice session in that plate. I use an old system for hold over(adjusting the power ring, until the animal is in the bracket) then I know where to hold and at what power. It works for me, and I am very comfortable on deer size game. I shoot a lot, and shoot groundhogs all summer, just shooting for heads only. The longest I plunked in the head, was 625 yds. But I have misjudged plenty also. John is a pro, and I'd almost bet, he has some military training as well. I like the show, but I get this feeling that too many are going to buy the videos, and are not going to spend the big dollars for a MOA long range rifle, with just as much going into optics, stock, load developement, or practice, hence a lot of wounded animals. Where does the hunting play into all of this. Just my 2 cts. Butcher