Tbh there's so many weapons that can 1-2 shot players nerfing just R&R seems kinda pointless.
No you can 2 shot with it NOW. It used to one shot people at maximum distance. You also have to take into consideration Rate of Fire, Range and spread. Sure, other weapons can one or two shot, but they are balanced by a really low RoF or you have to be really precise.
Smoking Daisy can one shot wound with a cartridge, but you can only unload one. Harec can one shot kill but has to reload each time and aim well. Doldren has to get head shots. Shae has to lock on. Etc... old R&R you would just shoot in the general direction of the screen and hold down the button and fire 3 shots in one second, the fist wounding the following killing. In other words, there's no skill or balance. But it's been nerfed now.
Oh wow i didn't know that, must have been even more annoying to deal with back then.