Symthic recently published it's Titanfall game statistics section. This is a great place to go see weapon stats like Rate of Fire, Max Damage, Spread ADS, etc. You might already be familiar with this kind of intel from other games like Battlefield or Call of Duty.
Shotgun: 285 damage before drop-off. (No wonder it's OP!)
R-101C Carbine: 50 damage before drop-off. (So much for my beloved Carbine!)
Charge Rifle: 2000 rodeo damage! (OMG gotta try this for rodeo kills!)
They're still updating some of the stats. I can't wait till they release the accuracy plots!