Problem in Shooting Accuracy

Hello everyone i got Problem in Shooting Accuracy using Raycast

Here is The Script :

     var hit: RaycastHit;
     
     if (Physics.Raycast(SpawnPoint.position, SpawnPoint.forward, hit)){
     
       var delay = hit.distance / bulletSpeed;
       
       var hitPt = hit.point;
       
       hitPt.y -= delay * 9.8;
       
       var dir = hitPt - SpawnPoint.position;
       yield WaitForSeconds(delay);
       
       // then do the actual shooting:
     
     
         if (Physics.Raycast(SpawnPoint.position, dir, hit)){
       if(hit.collider.gameObject.name == "Cube1"){
      hit.rigidbody.AddForceAtPosition(20 * SpawnPoint.forward , hit.point);
 
  }
  
       }
       
       
     Debug.DrawRay(SpawnPoint.position,dir * 20,Color.red);
         
     }

and the issue is

the Red Crosshair aiming on the box but when i shoot it draw ray but its next the box

the Accuracy is wrong

can anyone fix my script