Current under $200 military Mausers:
I agree that these are likely choices for just having fun. These are appearing at shows and are being advertised at the current time:
1.) Swedish M96 (long) and M38 (short) Mausers. These, in my opinion, are the best currenty out there. You should be able to get a beautifully made, all matching serial numbered rifle in the 6.5 swedish round. These are lots of fun to shoot.
2.) VZ 24 Czech Mausers in 8mm Mauser. I don't know what country these are coming from, but they are good guns. My local gunsmith just bought a bunch for sale. He says they came from some arsenal that took good care of them, doesn't know which. All that he and I have seen have mismatched bolts, but all of his, at least, head spaced right. I want one that is all matching, but cannot find one.
3.) Yugoslav M48 Mauser in 8mm. These were made after WWII by the Yugoslavs. The finishes on these are rougher than on the pre WWII mausers, but they are cheap and apparently good guns. I don't really want one that bad, but am tempted by the price and by the great condition that they all seem to be in.
4.) Turkish Masuers in 8mm. There are a whole lot of models being sold right now. All seem kind of beat-up, have mismatched serial numbers and have been arsenal reworked, which makes them less appealling in my eyes. Some of the earlier ones are actually Waffen Fabrik Mauser Obendorf made rifles, originally rifles of the highest quality, but the name is written in Turkish script, making it hard to notice at first. These were made when our master Paul Mauser himself ran the shop. I want a nice one of these, even if the Turks put some of their own work on the rifle.
5.) There are lots of British and allied Enfields and Russian and allied Mosin Nagant's out there, but I don't use these rifles or know much about them.