Yes I use it on all my pellets. I have a method of transfering as little as possible onto the pellet and when using my S400 for FT found it made more difference than weighing pellets, which takes ages to weed out the odd heavy or light pellet. Not sure if it will make a difference with the ev2, but use the same pellets for hft in my HK97 and would say they help flatten the trajectory.
EV2 mk2 with 2009 big Nikko
HW97K with 6-24 Nikko Nighteater