How to further improve handguns skill?

As in the topic, system emssage tells me that I need more acurate handgun to further improve the skill. I have quite a few handguns in collection but with evry single one the same story. How can i determine which handgun to use ? I am atm at skill value 2 + 8 %

i reached 3 lvl with L2031 Enforcer and USP .45 i do not know if i can reach higher lvl because its only my backup what i use rarely

Ah, misread the question. Dispersion represents accuracy. You want as low a value as possible…if you don’t have the right handguns, you can try to find mods and/or ammo that lowers dispersion.