Roger,
If you want to get an original military Mauser, the Yugoslavian M48 rifles are still available at reasonable prices. They are post WWII production, thus they were made without the stress and chaos of wartime production.
For the price of most of them, they are a wonderful way to get into an 8mm Mauser.
The one I bought came with its bayonet, cleaning kit and sling. It is beatifully blued and while the stock is a bit rough, it is made of teak wood and it should be just about indestructable. The bolt was left in the white and thus sets off the blued receiver nicely.
The 8mm is a very flexible cartridge to load for. Why it got such a bum rap here in America is beyond me. With proper loads and bullets, it can be useful on smaller deer up through the largest moose and is petty much the equal of the standard US 30 calibres. For accuracy I use the 175 grain Sierra Match King bullet and for general plinking I use the Remington bulk 185 grain 8mm Spitzer bullet that is economical to shoot and holds about 2 MOA.
For surplus ammo, You can get South American 190 grain ammo, Turkish 150 grain ammo and Romanian 190 grain ammo the last I checked. It's all probably still available if you look carefully. Be careful with the surplus ammo though. Most of it is corrosive and requires a thorough cleaning with hot water and detergent after use. Be careful when buying any surplus rifle. If they were used with corrosive ammo and not cleaned properly, the bore will look like a hundred miles of rough road. It's OK to have a dark bore (result of the priming compounds in old ammo) but it should have sharp rifling without any frosting or pits.
US factory ammo is downloaded to lower pressures than what we are used to and thus perhaps the American aversion to the cartridge. In the early days of the 8mm, it used a .318 bore (7.92 J). Prior to WW I, the bore size was upped to .323 calibre and the bullet was changed from a round nose design to the spitzer design (7.92 sG) . US ammo manufactures thus load to the lower pressure level so that if a .323 bullet gets shot out of a .318 bore rifle, the result will not be catastrophic.
Everything from hedge hogs to fighter planes and bombers have been shot up or down with the 7.92 X 57mm or commonly called 8mm Mauser. I hope you enjoy yours when you get it.