IEnumerator not looping correctly?

Questions & Answers
1

I have a pretty basic burst fire function for a gun- as in shooting three times in a row. Here is the script:

void Update ()
    {
        timer += Time.deltaTime;

        if (Input.GetButton("Fire1") && timer >= fireRate && Time.timeScale != 0)
           {
               if (burstFire)
                  {
                    StartCoroutine(BurstShot());
                  }
            }
    }

 IEnumerator BurstShot()
    {

       for(int i = 0; i < burstSize; i++)

        {
            timer = 0f;

            Quaternion bulletRot = Quaternion.Euler(90, 0, 0);

            GameObject newBullet = Instantiate(bulletObj, transform.position, transform.rotation * bulletRot) as GameObject;

            newBullet.GetComponent<Rigidbody>().velocity = bulletSpeed * transform.forward;

            currentAmmo--;

            yield return new WaitForSeconds(burstRate);
        }
       
    }

The problem is, while the first projectile will shoot forward correctly, the next two projectiles will launch upwards in a near perfect arc. And for the life of me I can’t figure out why. Why is everything in the coroutine repeating correctly except for the apparent rotation of the last two shots?

2

Perhaps your bullets are colliding with each other when you instantiate them, thus screwing up their rotation?