It seems I am the first brazilian here.
No guns yet, laws here are tough, you need to be licensed as a shooter and be a club member for a number (forgot how many) before you can buy any military caliber gun (long or short).
No chance of getting a fifty, it is strictly forbidden.
I am working towards a MSc in UNICAMP, so I will not apply here, because, when I move in less then 1 year, I'll have to communicate the change of address to the army (yes, the military controls the shooting sports, collecting, even hunting.
My first shooting class was some years ago, with a .380 Taurus. For a newbie, I was quite natural. 3" groups at 7m, from standing position.
Never shot a long gun, have an interest in shotguns and LR, otherwise why would I be here