Thanks for all the input guys.
I have thought this through, and I'm not going to mutilate the rifle like in that link. The scope will look nearly the same (not as big), but no bipod, brake, sporterized stock or anything like that. And if this thing doesn't go as planned, I'll probably keep the 6x42 Nikon (or sell it), sell the mount (or keep it for a different project) and either sell the rifle or keep it. I'm not going to put a ridiculous amount of money into this project; I want to make this an accurate yet practical rifle. I might do an epoxy bedding job if the situation requires and some other modifications to make it shoot well (and if the barrel's worn out, I can just buy a new one or a new rifle).
ollie: I'm not looking to put that much money into it. The most I'll pay for is a scope, mount, bolt and a few modifications to make it perform better (nothing major like a sporterized stock and such). After everything is paid, I'm expecting to have paid about $600 for the project. It's not like it's something I couldn't sell either; a brand new Nikon Monarch would sell pretty quickly around here, and I'm sure I could sell the mount as well. As for the rifle, it's $150 and I'll probably keep it anyway.
This is also something fun to do. If I bought a real Mosin sniper I probably wouldn't use it.
What's the huge deal with drilling the receiver? It's a redone rifle and it costs $150. I'll probably buy another later anyways.
What do you guys think? Do you think it isn't worth the time and money? Do you still think I should go with something else?
I'm also going to make or buy a cheekpad for it. Even the real snipers had high mounts.
If I end up going through with this, what do I need to take into consideration (cost of installation, bolt clearance, difficulty loading, etc.)?
Thanks a lot,
-Rohann