I'm like Fisherman, I bought mine at Wally world also, but it seems to work fine.
I re-load quite a bit, and they come in real handy for sealing loaded ammunition, or brass that I have prepared and don't want to load immediatley. Also great for storing pelletized powder if you buy in bulk and want to keep it fresh. I store my smokeless powder (in the container) also.
I have several pistols, that I keep well oiled, and sealed in a bag, when I'm not using them. If you can find the bags on a roll, you can make them as long as you want, and they are great for sealing out moisture and dust from rifles and shotguns as well (be sure to oil them good before sealing them up, and make sure there isn't any moisture on them before sealing)
If you are a fisherman, there are a hundred ways you can use the vacum system. I might even use mine to occasionally store food with.
