In “Jaws,” the Sheriff takes out the shark by shooting a SCUBA tank with an M-1 Garand. The tank, clenched in the sharks jaws, kerplodes and shreds the Shark. Many years later Mythbusters tried to do the same thing, with the result that nothing much happened: holes were poked in the tank and it quickly blew down, but didn’t explode. Myth busted.
But then… GunTuber Edwin Sarkissian put an oxygen tank in a safe and shot through them with a .50 BMG rifle. The results were energetic and nearly Kentucky Ballistics in their effect. “Put a thumb in it” would not have been sufficient.
Not entirely relevant: restoration of a Pakistani home-made Kalashnikov 12-gauge shotgun, left in a wall for a number of years and rusted badly. Back when I lived in a free state I had a 12-gauge AK, and it was fun as hell to shoot… but you couldn’t pay me enough to pull the trigger on this thing.