If you really are determined to put a scope on the rifle and you want "tack driver" accuracy, forget the mil-surp bolt action rifles. Sure, you can buy a K-31 then spend alot of money on a scope mount and more money on a scope. Current ammo price is about $22 for 60 rounds, but it's cheaper if you reload. So add the cost of a reloading setup, the rifle brass, bullets, powder, and primers into the mix.
I sense cheap, accurate, and easy are the important things. Oh, and a scope also. Don't get me wrong, I like scopes and mil-surp rifles, but mixing the two is a real challenge especially if you don't want to pay a gunsmith to do the work.
My suggestion is to find an older savage model 110 bolt action rifle with a scope, mounts, and sling for $240-$250. It'll be pretty accurate and shoot commonly available ammo like 30-06, 308, 270, or similar. You could hunt deer or paper with it. You may want to reload this ammo for cost savings, but you won't have to in the beginning. In 30-06, you could shoot the Korean surplus ammo for 20 cents a round, but it's probably not target quality ammo.
Accurate bullets are a big cost driver whether you are buying factory ammo or reloading it yourself. What do You consider tack-driving accuracy? How much are you willing to spend to get it consistently? You need to define these before buying anything.