I have the TG-1 .177 cal air rifle the thing is i can hit the middle of a coke can turned sideways so the bottom is facing me i can tape a blade of grass on a target and hit the peice of grass about 25 yards away, but i can put a target 10,20,30 yards ect... And miss it every time I thought my scope might be off so i would shoot at other stuff and hit it within a 1/2 inch consistently.. I just cant hit the orange spot and dont really know why... Has anyone else experience this or have any suggestions for me.