Russian OOB -

[PlasmaKrab]

ROF in the unit stats screen is a bit of a deceptive stat as it has little direct effect on the actual ROF of units in the game. Experience of the unit has a lot more effect. Just try it out by changing the ROF of units and see what difference it makes in an actual set-up and then vary the experience instead and see what difference that makes.

Moment here. As far as indirect fire is concerned, I think ROF has a direct influence on the number of rounds shot per turn on a fire mission. Since all the units mentioned above are generally classed as SP mortars or similar, it should be of some importance.

Now I don't know exactly how much ROF means how many RPM, and which level of actual ROF is to be considered (i.e. instant, burst, sustained).
Better chack with comparable artillery units.