I was reading a piece of news about a sordid affair (a mother lured and killed a man who apparently had raped her 6-year old daughter) and one particular aspect of the whole thing caught my attention. Copy-pasting the relevant section of the article:
Tried it. Makes a frightful mess because the potato gets blown to smithereens by high pressure gases. Does nothing to reduce noise. Taping the potato reduces the mess slightly but there is still no noise reduction.
Back in the olden days, I once watched an episode of the TV crime drama Shaft. I recall virtually nothing of the episode, except that at one point, Richard Roundtree opened his apartment window, aimed a high-powered rifle out, and shot out the tire on the car of some baddies. He had first “silenced” the rifle by jamming its muzzle a couple of inches deep into the end of a large potato.
Note, however, that such an adapter, or an oil filter used thusly, is legally regulated the same as an actual silencer, years in federal prison if you don’t get the right paperwork. It’s the same principle that causes a shoelace to be legally considered a machine gun if it’s used to make a gun fire automatically.
Several years ago, I tried using a small watermelon as a silencer. The result was predictably messy. I did not try the tape. It is pretty amazing what sort of blast you get from the muzzle of a handgun. You might as well stick an M-80 in the melon (or potato).