Problems Zeroing in

Could you say what bb brand you are using, what bucking you hav
e, what barrel you have and have you shimmed your hopup arm, at first, I'd say the problem is your bucking.
E:deleted few unnecessary parts

The stock bucking doesn't give enough spin for 0.36g bbs.
Let me make a guestion list for you.
-Have you shimmed your hopup arm?
-What is the last time you cleaned your bucking with warm water and soap? If bucking has residue from bbs, it harms your accuracy. Silicone oil on bucking does it too.
-What is the last time you cleaned your barrel?

Hopup arm is the "stick" that presses bucking to make backspin, if you havent shimmed it, it might wobble left and right, you should google "shimming vsr-10 hopup arm" or something like that.