I lent a rifle to someone once who brought it back saying it's not working. There were seven pellets stuck about a third of the way up the barrel. I didn't have anything long enough so I got a wire coat hangar, put two ends in a vice and twisted it until I had a long and surprisingly strong pokey thing. I then welded the exact barrel sized drill on the end and carefully twisted my way through the seven pellets. Thankfully the rifle was fine afterward. Should add that it was a .22. Don't know if there would've been enough room for a .177.
CZ 527 in 17 Hornet. Anchutz 1417 .22lr - Rapid Mk2 .22 fac @ 28ftlbs with BSA barrel
HW100KT .22 @12ftlbs - RWS Scimitar .22 @ 12ftlbs - AA S200 .22 @ 12ftlbs
Archer NV