If you cruise the internet for a while, you are bound to find some misinfo. But I want to specifically adress http://www.takepart.com/photos/10-countries-assault-weapons-bans/united-states-9470-gun-homicides-year becuase of so much misinformation in it.
Australia: civilians CAN have semi automatic long guns and pump-action shotguns, but only under a Category C (self-loading rimfire rifles with a magazine capacity of no more than 10 rounds, self-loading shotguns with a magazine capacity of no more than 5 rounds, pump action shotguns with a magazine capacity of no more than 5 rounds) or D (self-loading centre-fire rifles, self-loading rimfire rifles with a magazine capacity of more than 10 rounds, self-loading shotguns with a magazine capacity of more than 5 rounds pump action shotguns with a magazine capacity of more than 5 rounds) license, (info obtained credit of http://www.police.nsw.gov.au/__data/assets/pdf_file/0007/133198/FACT_SHEET_Firearm_Types_Oct_2012.pdf) which is hard to get. According to Wikipedia, "Primary producers, occupational shooters[clarification needed], firearm dealers, firearm safety officers, collectors and some clay target shooters can own functional Category C firearms.", and "Functional Category D firearms are restricted to government agencies and occupational shooters. Collectors may own deactivated Category D firearms.". "Deactivated" means that the weapon is just made so it is unable to fire anymore, and "Primary producers" are farmers.
From what I heard, anyone can get a Category A, B, or H license and functional firearms those licenses are covered by. But all of the others are harder to get. Also note that you must prove that you have some type of alignment that would take it hard for you to use a Category A shotgun. The handgun caliber restriction mentioned in the article is misleading, as that you can get them for single action or metallic silhouette shooting.
And remember, I used GOVERNMENT DOCUMENTS, so you don't have to take the word of some schmuck.