Duh, i know the problem. . . . . . your shooting it backwards. Switch over to the other shoulder, that should fix it. LoL jk
There are sights similar to those you have on the gun with alot more adjustment which would allow you to get it hitting dead center. I wouldnt go to the woods with a gun that i was gonna have to remember to aim low with b/c it's easy to remember now. . . with a longbeard breathing down your neck it may not be so easy. One less thing to worry about