The 91/30 was my first gun, and still my favorite range gun. Get lots of practice shooting it, and it's a good deer gun as well. I shot my first deer with mine, after a couple thousand rounds of practice at the range. I like to put a bunch of clays on the berm behind the 100y target spots and pop them off. It makes for transition and target acquisition practice.
As for good sights for longer range, I would recommend Mojo Sights. They're tandem aperture sights, and work VERY well on the Mosin-Nagants. I'd recommend getting the MicroClick SnapSight set and the Aperture pack, putting the .120" on the front and the .090" on the rear. It will tighten up you sight picture, and make 100y shots relatively easy with practice.
Here's me with my first deer, taken with my 91/30. I caught it running perpendicular to me about 40 yards out:
Picture removed
For hunting ammo, I'd recommend Sellier & Bellot 180 grain SP. It's very accurate and consistent, and seems to expand nicely. The deer above had an entrance wound between the ribs, with an exit would significantly larger that broke 2 ribs on the way out. I get mine at Cabela's, but it can be found multiple places.
http://www.sellier-bellot.cz/rifle-ammu ... roduct=524" onclick="window.open(this.href);return false;
[EDIT] Sorry to the mods, forgot that hunting photos are relegated to the hunting photos area. You can view the photo I'd previously posted on the following older post over in that section:
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