Best zero for 9mm PCC..?

[ST911]

I have asked one of the mods regarding the best zero for a 9mm PCC. It may be different than a 5.56/.223. Can the forum tell me what you do for the smaller length round ? Any help is appreciated as I am new to firearms and the forum. Thx.

Generally accepted "best" for PCCs/SMGs is 25yds for the reasons above. Vary according to particular needs and ammo, but 25 works for most.