For cans and shit? You are buying a pistol? The shitty thing with pistols is they don't hold that much ammo. But the pistol that I had shot both. Cept the pellet's had to be loaded after every shot while it could hold like 15 BB's
Crossman 357 replica with 8" barrle and 10 shot pellet clip, It's a co2 powerd gun but fires pellets semi-auto at 495fps and you can preload clips for it. If you get one pls don't shoot at animals.
The 357 is pretty sweet. I have one of those from my younger years. Either way, make sure you get a CO2 powered one. They have pump style pistols, but they suck really bad.
Those airsoft guns are pretty fun too. They do sting pretty good if you get a good one. My wife and I like to run around the house shooting eachother with those. It's a good time.
if you are only going to shoot cans and nothing else, BB, BUT, if you want to do a little damage to something, birds, squirrels, or some other smaller animal, go with the pellet. Sorry to the peta folks in here but that's life