I've engaged riflemen from 60 feet away, ambushed pairs of riflemen, gone toe to toe with SAW's within 120feet, and taken on countless people in marksmen battles.
I have people cower in fear behind cover because they can't shoot out of a 2" wide crack because I have them pinned from 100 feet away.
I make people RUN into the field from respawn at our CQB area because I can tag them from 200 feet away.
And I've had people RUN from my bolt action rifle in an ambush.
It's gone wrong for me plenty of times too.
There's nothing wrong with the rifle or the role, you just need to get better at it!