And this may sound dumb, but if you've got a gun, you don't really need to chase the squirrels.
Yes that quite right. We are also assuming that this individual actually could light a fire and cook the squirrel's that he had shot. Since most things he did he did wrong, it quit unlikely that he could have stayed put; boiled some water, and made a meal.
In reality for a few days food is irrelevant and water is essential.