Ok guys I am a bowhunter, I don't even own a rifle. My wife however does have a rifle, and I have a 12 year old that can hunt this year. The guns stock is to big for him so I purchased a stock for cheap at the gun show from Christensen Arms, and am wondering how I cut the stock to fit him. Is there some way that you can measure him( like draw length for a bow) to see where I need to cut the stock? Any help would be appreciated. Thanks in advance.