Fun I understand. Pity you can't take a swan or pass shoot a few geese with that monster. That would be real fun.
Maybe he can...in Australia...Geo
Regrettably, not in Victoria or other states for game ie ducks and quail. No such restriction for pest animals. A shame really: ducks shot on the wing inside a bag limit won't know the difference if they were shot with ratshot from a .22 or BBs from a 4 bore.
When I was growing up, we used to have black swans eat emerging oat, wheat and other crops; Dad used to shoot at them with a .22 - not legally, but farmers did what they had to do on private land to protect their livelihood. Oh for a 8 bore back then!