Target lead (aim ahead) problem

Hi, trying to upgrade my turret asset, but target lead is giving me problems. Its just not working.

After days on-off googling I came down with the following few methods I found the clearest. But both just return the exact target position, not an estimate at all. At least for me. Can anyone confirm they work? I didn't find any other part of my code that replaces the result. The default bullet speed is 10.

Example 1:

  Vector3 targetVelocity = target.GetComponent<Rigidbody>().velocity;
     
  float distance = Vector3.Distance(turretHead.position, targetPos);
  float travelTime = distance/bulletSpeed;
  Vector3 aimPoint = target.position +targetVelocity*travelTime;
     
  float distance2 = Vector3.Distance(turretHead.position, aimPoint);
  float travelTime2 = distance2/bulletSpeed;
  estPos = target.position +targetVelocity*travelTime2;

Example 2

 Vector3 targetVelocity = target.GetComponent<Rigidbody>().velocity;
 float distance = Vector3.Distance(targetPos, turretHead.position);
     
 Vector3 firstPassV = targetPos + ((targetVelocity*1.15f)*(distance/bulletSpeed));
 float firstPassD = Vector3.Distance(firstPassV,turretHead.position);
     
 Vector3 secondPassV = targetPos + ((targetVelocity*1.15f)*(firstPassD/bulletSpeed));
 float secondPassD = Vector3.Distance(secondPassV,turretHead.position);
  
 estPos = targetPos + ((targetVelocity*1.15f)*(secondPassD/bulletSpeed));

Example 3:

 Vector3 newPos = targetPos;
 Vector3 newDir = target.GetComponent<Rigidbody>().velocity;
 
 float dis;
 if(muzzlePositions.Length > 0)
     dis = (newPos - muzzlePositions[randBarrel].position).magnitude;
 else
     dis = (newPos - turretHead.position).magnitude;
 estPos = newPos + (dis/bulletSpeed)*newDir;

This is a screen of whats happening. Cube is moving at speed of 2, in circular motion, and bullet at speed of 10. As you can see with raycast, the result always points at the exact position of the target, not an estimate. I must be doing something wrong if 3 different methods give me the same result, I just don't know what.