Many times I see where survival in the wilderness is described as just needing a gun with ammo and the person will just live off the land hunting. The problem with this scenrio is that in a survival situation you will have limited ammunition. Therefore the ammunition you carry is better to be limited for self preservation in the worst of conditions and not for hunting.
There is also another problem with hunting of big game - sure its going to require a gun to get close enough to kill it but unless the temperature is below freezing outside the meat will spoil unless it is preserved quickly or eaten by a party of about 30 people.
With this being said - I do recommend anyone who wants to learn survival learn how to build a live trap. Live traps are great as they allow you to catch small daily quantities of food and if you do well one day - the animal, bird or fish could be kept alive for the days when trapping is bringing in nothing.
Live animal trap -
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