My M48 just isn't as nice as my German Mausers quality-wise (well, that and at 100 yards it throws bullets all over the place, I should probably fix that but..ehh) that's sorta why I haven't gotten a 24/47. Of course the K98ks have more interesting history behind them too. I'd say every one should own a nice K98k, they are starting to become harder to find though.
My M48A is a brand new gun - never fired when I bought it, and I suspect it was built from parts stockpiles rather than ever having been made for military use. The bolt is really stiff, it needs to be lapped a little to smooth it out - but it looks beautiful. I haven't shot it too much at a full sized range, but a 50 yards it will knock cans over without trouble. My 24/47 looks a lot more "used", but the bolt is much more smooth in operation and it is quite accurate at 100 yards - not pinpoint accurate like my K31, but more than accurate enough to hunt with, for example. Like the German Mausers, it has seen a lot of service (more service than the K98s actually), so it is a battle tested weapon. If I were you I'd look for a 24/47 first. They are based on the Model 24 so they are all pre-war manufactured, have more history than the M48s and pretty much all of them have seen service.
As far as ammo goes I have so much Egyptian surplus stuff stocked up I haven't had to buy 7.92x57 in years. It's not the best stuff but it works for pretty well. I'm not looking forward to running out of that stuff now though. It's probably is really expensive and I have a feeling ammo might start getting hard to find but we'll see how that goes.
I've never seen Egyptian 7.92x57 on the market. If it shoots well I'd try and save a bunch of it and buy Yugo or Turkish stiff now while it's available. 5-6 years ago you could still get the German WWII 7.92x57, which was regarded by some as the best surplus in that caliber - it's all gone now.
Oh hey I looked further back in the thread and I have to say I like your Tula M1895 Nagant revolver I want one of those myself.
Thanks! They are still quite inexpensive, though the ammo is pricey. They are pretty accurate in single action mode, but the double action trigger is very heavy.