depends on what calibers are more available in your area, i have heard .303 british is still fairly common in canada, so a sweet enfield could be had for a song, and the .303 also has alot of options for hunting, both large, and medium sized game! did you know that more elephants have been taken with the .303 than any other cartridge in history?, and you could definately take deer, elk, moose, or bear with a .303! the enfield has one of the slickest fast actions in history! and the magazine holding 10 rounds is an added bonus!
you could also see if you can get your hands on an ishapore enfeild that was made in india, and chambered in the .308/7.62x51mm nato round! i have one that has a 12 round magazine, and i got 5 more mags for it, bad ass rifle it is, and tougher than a tire iron!
as far as .22 rifles go, the ruger 10/22 is king down here in america, and shotguns you wont go wrong with a remington 870, or mossberg 500, so long as its in .12 gauge, ammo shouldnt be an issue as the .12 gauge is the most common, at least in america that is, so i think its a world standard lol!!!