Mastinson, I keep it loaded with handloads. I use the Hornaday 170 gr bullets mostly, they seem to shoot better groups in my guns. I don't think I've bought any factory 30/30 loads for ,......maybe 25 or so years. If you don't load, then keep your eye out for the sales that Wal-Mart or K-mart or whatever have in the fall during hunting season. Seems like you can get 30/30 rounds for about $8 to $10 bucks a box at those times.
Most guys I've heard comment on 30/30 ammo seem to like Winchester best.
I have drilled a hole under the buttplate and put a spare firing pin in on a couple of guns, but the Winchesters seem to be pretty reliable if not dry-fired. I may do this to a couple more of my guns tho, just cheap insurance to have it with the gun.
Thinking about it, I DO keep an army field cleaning kit in the truck, the one with the M-16 takedown cleaning rod, and I add brushes (need the adapter if the rod didn't have one) for my most used guns, some patches, and a muzzle guide in the nylon case. Nice to have if you get caught in the rain when hunting.