u/IndependentData1104

I recently made a post about wether or not I should get one of these scopes and It seemed to be a popular budget scope. Anyway I put it on my .177 hatsan airtact and probably fired between 100 and 200 shots with RWS superdome pellets trying to zero this thing. The groupings are somewhat tight but not enough, they aren't center on the scope either even after adjusting after every 3 or so shots for however many shots, and sometimes shots are nowhere near accurate. By the end most of the shots where hitting within 2 inches of each other. And slightly down to the left. It is 4 am for me as im writing this and I just stepped outside and saw a rabbit in my yard. So I got my air rifle (scopes on the same gun but .25 this time, domed pellets) and i was resting it on the window seal. This was the first thing ive shot at besides a target since attempting to zero the scope. Ik for a fact I was aiming dead on but the shot totally wiffed. So my question is, is it my gun? Is it the scope? Is it the ammo? Idk what to do at this point theres so many things it could be lol. I am new to airguns so any and all advice is much appreciated.