I am doing some research on my first long range rifle and these are my 2 top of the list calibers because they have readily available ammo (most of the time on the 308) and readily available reloading supplies. My main concern is how the round performs past 1000 yards. I have done research and looked around and from what i can tell they are both great calibers out to 1000 but i haven't found very much about shots past the 1000 yard mark. The longest shot i will take will be maybe a mile because i found a range with a 1 mile target in my area and most of my shooting will be between 700 and 1200 yards. Can someone point me in the right direction of another thread or offer up some advice on which caliber to pick?