What kind of hunting are you going to be doing? We leave the truck in the dark and sometimes don't come back till it is dark. When this is the case, I want enough stuff in my possibles bag to manage any problem. I also want enough reloads that I don't have to worry if one opens up in my pocket or bag. I have seen people dump their powder charge on the ground during a panic, while trying to get a second shot lined up.
If you are close to your truck or on a couple hour venture.....then a couple reloads may be all you need. It sure would suck to need something and not have it...just to ruin the rest of that hunt.