Yes, canned food is bulky. On the other hand it is pre-cooked (no need for fire making or cooking supplies) and doesnt need to be rehydrated - saving on the h2o

Dinty Moore is good for at least 3 years. I use mine up after that time, and it still tastes good. I tried buying the cheaper store brand, and just wasnt the same (the dogs loved it though)

Oh, yeah. I have several can openers in our BOBs.