Pistol cartridge carbines are fun guns for pigging in swamps, not for hunting on most places.
A 9mm carbine has to be a sub-machine gun to come close to being useful, but not anyway that I know for sure. I've used 357mag out of a rifle on kangaroos and it's totally effective out to at least 70m, as far as I've shot them anyway. I was amazed it worked as well as it did. Hornady XTPs are brilliant.
Interesting. The 9mm kills deer here quite well. Dont' run far. Works almost as good on deer and pigs as our 10mm does. Of course deer and pigs are not hard to kill. I've bio clue how hard your kangaroos are to kill
Oddly, there are two places in the world where you cannot kill Kangaroos - Australia and France. (there is a small wild population of Wallabies in a forest in France which cannot be hunted because they are not on the list of approved game species).
In New Zealand, hunting wallabies is encouraged. They are an introduced pest.
Most hunting in Australia is Rabbits, Foxes, Pigs, Deer (6 different species), wild Cattle, Donkeys, Horses and Dogs, Asiatic Buffalo, Camels, and the top is Banteng.
Of these, only the smaller game live in places where the shorter ranges of pistol calibre carbines (357/44 Mag and 45 Long Colt/454 Cassull mainly) are both useful and sufficiently powerful.
