@rookhawk - It is chambered in 7x57, albeit it is actually marked "M 7.0" on the barrel. It was listed as a Belgian Mauser and has Belgian proof marks, but the action does not have any markings on the left side of the action that a normal FN would have (but I suspect it is still an FN, just scrubbed of its markings). I don't see anything on it that would indicate who put it together, but I think they did a decent job. Thanks for the suggestion on touching up the stock and cleaning up the checkering; I'll probably do that at some point in the near future, as well as get some Talley QD rings.
PS - I actually swapped out that Leupold 2-7 for a similar Vari-X II 3-9x40 glossy because I need to send that 2-7 in to Leupold for servicing.
To start the cleanup, all you need is a small cup of warm dawn dish soap and a soft bristle tooth brush. Cut the checkering with the toothbrush, ensuring you do not saturate the wood or getting it too wet. Allow it to dry and repeat after a few days rather than doing too much at once that would swell the checkering and reduce the sharpness.
A month later, wipe some mineral spirits on the stock (not checkering) to get any surface sludge off of it. Then just add a few drops of oil to the stock and rub it in with the palm of the hand.
The stock will really pop and you removed no originality, just a bit of filth. It takes an 85% condition rifle and moves it to 92-95%.
When the rifle is out of the stock, get some kroil and fine bronze wool (not steel!) and use excessive amounts of oil while lightly wiping the metal. It will remove surface rust and stubborn greases. The bluing condition will go from excellent to near-new.
At the same time, I like to also put a very thin layer of oil finish inside the stock to prevent moisture from getting in. Nothing heavy, just a tiny amount to keep the wood stable from humidity changes while taking it afield.
For the barrel on an old rifle like that, if you want exceptional results, I do this. Get a worn out bronze brush that is slightly undersized. Wrap the old brush in a bit of fine bronze wool. Wrap flannel bore cleaning patch around that like you're rolling a cigarrette. Saturate that brush with kroil. Rub JB bore paste on the outside of the patch thoroughly. Push it through the barrel 50 passes. The kroil is so small molecularly that it falls in the rifling and under micro-rust. The JB bore paste is roughly 4000 grit so it shines the lands. You'll take away no metal, so you're not lapping whatsoever, but you are dislodging micro rust, lead, powder, and brass/bronze. Once that is complete, give it a thorough, normal barrel cleaning thereafter. The barrel will be pristine.
The action style with the safety on the side looks like an FN commercial action. If no FN markings exist, I'd wager it was made by Dumoulin but it could also be Masquelier, Bury, or Auguste Francotte.
it's a very proper stalking rifle. Congratulations on an exceptionally nice rifle for reasonable money.