It's not that hard in CoD - quickscoping OHKs from 100m - easy peasy pants, but it is going to be really hard in BRINK.
No OHKs, and an EXTREMELY long rechambering time (for the bolt-action), only the really good people are going to be able to use them effectively,
and the kind of the people who are that skilled generally aren't the 'elitist' 12 year olds with skilzzzzzz. So shut the fuc!< up - the game's not even out yet.