bastidyou know why the widowmaker is banned?
...you're kidding right?
How about a rundown:
1shot per 30 Metal. So right out of the gate, you have 6 shots. Starting right here it's now currently a shotgun, but you need to loot metal to reload. However, you regen 1 metal per 1 damage dealt, or so it appears after about 5 minutes of testing.
So, in order to completely regen your shot, you need to do 30 damage per shot. At close range you deal about 9 damage per pellt, this means you need to hit 3/10 pellets fired to regen your metal. So at close range, as long as you hit ~30% of your shots. You have infinite ammo.
At medium range, this lowers to around 6 damage/pellet. So you need to hit 5/10 pellets. This means as long as you hit half your shots, you have infinite ammo.
Now, people don't all completely suck at this game, and can actually hit their shots. So as long as they aren't chipping you for 3 damage at long range, widowmaker will effectively give you infinite ammo without the need of reloading. Even the random scrub can hit a few shots, get all their ammo back and get 7-9 loaded shots, before considering ammo packs, and before considering looting 100/kill.
Now: compare it to the shotgun. Why in the hell wouldn't this be banned?