Hello every body. I am new to long range shooting. I built myself a 600yd range last year, and I have been shooting about twice a month ever since. My current rig is a factory model 70 in 7wsm with a 3x12x50 Burris Euro Diamond with Ballistic-Plex reticle. I'm shooting factory ammo. At my range I shoot prone off a bi-pod. I shoot pretty well out to 400yds (<= 1MOA) but past that my shooting deteriorates pretty quickly. I realize my current rig is very basic. What can I do to improve my rifle to turn it into a good 600yd hunting rig? Hand loading is not really an option. I understand that my rifle is only part of the equation and I am always looking for advice to improve my shooting as well.