Any of the mainstream calibers will work just fine and be relatively affordable. .30-06 , .308, .270. Any magnum will cost you more per box. I have slightly more eclectic tastes and like 6.5 and 7 mm rifles. Hunting rifles chambered in 7x57mm, .257 roberts, 7mm-08, 6.5x55, and 7mm wsm have all graced my gun safe over the years. The tikka t3 and FNH made winchester model 70's are very nicely made guns the will hold their value that wont break the bank.