If you want to shoot the cheap 7.62x39 ammo, try going to a gunshow and pick up an SKS.
They are made to eat anything you put into it, and they aren't expensive especially if you look for the best deal.
I picked one up last year a Chinese Norinco that was like new, with only 100 rounds through it, for $150, from a guy that was wanting to buy an AR rifle and needed to unload a couple of his guns for cash.
They are fun guns to shoot, and if you get lucky, there are some that shoot pretty decent when it comes to accuracy.
If you can find a new Yugo they are the better shooters.
Stay safe, and Godspeed!