Matchheads with a little blu-tak fit perfectly into the back of a .177 air pellet, and make a lovely little bang when they hit a solid target.
They may, however, come out halfway up the barrel of your mate's rifle.

If this is the case, it's not advsiable to fire a few more to dislodge them, as this will simply clog the barrel with pellets and blu-tak, and he probably won't be best pleased on his return.

If this happens, it's probably best to offer to pay for it instead of claiming that it was his gun and thus his responsibility, as he will probably get upset, tell his dad, and you'll have to buy him a new one, which, at £100 a pop, might mean you're potentially brassic until your mid-30s.
( Je suis un vagabond is an unfunny, up your own arse middle class knob, Mon 13 Aug 2012, 17:08, 1 reply)

Or for much more fun...
Sellotape a candle to an aerosol can (WD40 works best), light candle, retreat 30-40ft, fire air rifle at can. BOOM! Homemade, remotely detonating napalm bombs.
( Albert Marshmallow is a completely irredeemable cunt, Tue 14 Aug 2012, 14:10, closed)