Thanks for the advice, and yeah I am pretty determined to do this myself. Now I have another question, the caliber that I would really like is a .308, and I think that it is important to know that the whole reason that I am building this gun is for hog hunting, and not so much hunting as an attempt to take down some of the population on one of the ranches that I work on. I know that the .308 isn't the only caliber capable of killing a pig, but what I would really like to know is, if I can't build it in a .308, then what other caliber should I take a look at?