1. M39 Finnish Mosin Nagant. The best of the Mosins IMHO, a bit heavier than the others, but great sights, great trigger, heavier barrel, and very accurate. Ammo is cheap.
2. Yugo SKS. Good bargain centerfire semi-auto with good worksmanship. I use mine mainly as a plinker and it also qualifies as a SHTF rifle, freeing you up to get other fun stuff.
3. Enfield No. 4 MkI or MkII. If you can find a good one in the price range, grab it. The best of the Enfields IMHO, terrific peep-sights and a heavier barrel make it easy to shoot accurately.
4. RC Mauser 98k. It's a classic design that belongs in every C&R collection and while there are a few choices in Mauser actions, I would give the edge to the RC Mauser 98k since it's more directly connected to history (I'm being a little hypocritical here since I am making do with a Swedish M38 as my Mauser variant. . .
).
5. Swiss K-31. I checked a few out at the last gunshow I was at and they are very impressively built. Haven't shoot one so it's a FWIW piece of advice, but if you reload, it's a no-brainer. Very nice all the way around. If you don't reload, go with a Russian Mosin Nagant in the configuration you like best as pick number five.
This list is in no particular order, if you see a nice example of any at the right price, go ahead a get it
. HTH.