First- Make sure your barrel is free floating. Take a dollar bill from the front of the stock and slide it between the barrel and the stock. It should slide all the way down to the action with no resistence.

Second- That Simmons Eight-Point isn't helping much, toss that thing in the trash and get a decent scope.

Third- Ammo does play a big part in accuracy. Your gun may not like that ammo. Try different types until one groups better.

Fourth- Sometimes guns are just not accurate out of the box.