I am looking to build a long range target gun. Mostly out to 6-700 yards with the occasional 1000 yard shot. I will be shooting paper or steel plates. The gun I have is a ruger m77 mark II in 300 wsm. My question is should I keep this gun or try and find a different gun or caliber. This gun will have no other use except maybe a coyote or some other pest. I have a Remington 700 30-06 and a browning a-bolt 7 mag that I am attached to so they will stick around and cover the hunting trips. I acquired the 300 wsm on trade so I have no attachment to it. One investment will be a brake if I am going to shoot this thing all day at the range. I appreciate any insight. I reload my own ammo if that helps any. Also I would prefer to buy something off the shelf and not put more into the gun than what the 300 is worth.