Bolt action rifles are useless - need damage buff &/or ROF increase. I really enjoyed playing with bolt action - but it often takes multiple shots to put down enemies! The damage is too low and the cycle rate too high. You are basically playing with a handicap - shotgun with slug rounds is often better with a 2X as a mid range sniper than a bolt action & way too easy to get sprayed down at even moderately long ranges by AK/AR full auto.
I would argue for a reload speed boost rather than a ROF boost. All they'd have to do is speed up the animation for putting shells in. (not counting the stripper clip for the mosin)
I just feel like I spend 75% of my time reloading with a bolt. my gun is never "ready" because I'm forced to use almost every second of downtime to hit R to put more bullets back in.