for feeding you. YOu MIGHT need one for defense, of course, vs animals or men, but a single shot is a PATHETIC choice for that. A pocket 9mm, 1 lb Kahr CM9, will handle that, so why bother to lug around a longarm?
For the extra 3-5 lbs of a longarm and its ammo, you'd be way ahead to have some monofilament gill nets, trotlines, snares, or dried food.
If you are sick or wounded, how is a longarm any help (as vs that pocket pistol)? All you really have to do is keep a smoky fire burning all day, and in 3-4 days, somebody is going to come check out that fire. Presto, there's your rescue. WHY didn't you tell a couple of people where you were going, line of travel, and time of expected arrival, hmm?
Very, VERY few places in the lower 48 states can you not climb the tallest hill/tree/pole and NOT see lights at night. They are visible for 30+ miles, you know. Mark the direction of the light, and walk that way the next day. repeat as needed. You'll need water, maybe shelter and bug dope, but not a longarm.
The lights might "just" be cars, but if you pile enough stuff on the road, cars HAVE to stop. then you make your pitch for why they should give you a ride. Having (visible) longarms is not likely to help you hitchhike, by the way. 
For the extra 3-5 lbs of a longarm and its ammo, you'd be way ahead to have some monofilament gill nets, trotlines, snares, or dried food.

If you are sick or wounded, how is a longarm any help (as vs that pocket pistol)? All you really have to do is keep a smoky fire burning all day, and in 3-4 days, somebody is going to come check out that fire. Presto, there's your rescue. WHY didn't you tell a couple of people where you were going, line of travel, and time of expected arrival, hmm?
Very, VERY few places in the lower 48 states can you not climb the tallest hill/tree/pole and NOT see lights at night. They are visible for 30+ miles, you know. Mark the direction of the light, and walk that way the next day. repeat as needed. You'll need water, maybe shelter and bug dope, but not a longarm.

