I'm building a .308 for 1000yards. I have decided to use a vortex PST scope. I was wondering what the thoughts are for a 4-16x50 or the 6-24x50. With the bigger scope I would get 65 MOA in total elevation adjustment. The 4-16 has 75MOA total adjustment. I really like using the 2 piece Leupold base. Not sure if I want to use a 1 piece base with 20 MOA elevation. The round I will be building will have the 168 or 175gr Berger VLD match grade hunting bullet.gun) Any thoughts?