I just bought a Savage FCP HS precision Lapua. I have read people commenting on differences in what rails came on their rifles. Im relatively new to this and do not know how to determine if the factory rail is 0MOA or 20 MOA. Can anyone explain how to tell the difference? Can I just measure the stock end and barrel end of the rail, and if the stock end is higher that means its probably a 20 MOA? Their was too much technical talk when I used the search methods. Thanks!