The Mosin-Nagants are inexpensive, well made, and ammo is cheap and plentiful (for now). It shoots 7.62x54r round ~ 3006 in size. Cons include they kick like a mule. Priced less then $100.
If you want a highly accurate rifle look to the K31 Swiss rifles. The Swiss gave every infantry man a sniper rifle and they shoot like one. Most all bores are in great condition because the Swiss never made corrosive ammo in the 7.5 Swiss. Priced $250 birch stock, $300 walnut stock.
SKS rifle (not all, must be c&r) semiauto goodness.
Just three off the top of my head.