Can play multiple sounds from one audiosource on an object. But cant play sound from audiosource on another?

I'm making a game for class with a tank that you can move and shoot. Relevant audio code on the Player Tank is this which is in a script called TankShooting attached to the tank object:

 public class TankShooting : MonoBehaviour {
     public AudioClip reload;
     public AudioClip shoot;
 
 if (Input.GetKeyDown("space")){
             if (curammo > 0) {
                 gameObject.GetComponent<AudioSource> ().PlayOneShot (shoot, 1.0f);
 }

So when you press space, you fire a bullet, and it plays the fire sound no problem. Also if you drive over an ammo box it'll play a reload sound. This works fine as well.

 void OnTriggerEnter(Collider col){
         if (col.tag == "AmmoBox") {
             gameObject.GetComponent<AudioSource> ().PlayOneShot (reload, 1.0f);
         }
     }

The way the tank shoots is instantiating a prefab of a bullet object I have. The bullet has a sphere collider, rigidbody, its own audiosource, and a script to handle playing a sound when it hits something, and instantiating an explosion effect. The explosion works fine, but the sound won't play.

This is the script attached to the bullet prefab:

 public class BulletScript : MonoBehaviour {
     public AudioClip explode;
 
     void OnCollisionEnter(Collision col){
         gameObject.GetComponent<AudioSource> ().PlayOneShot (explode, 1.0f);
     }
 }

I've tried various Debug.Logs and everything seems to be working as it should. The scripts work and run but the sound just doesn't play. Am I missing something simple? The audio file is fine as I tried swapping it into the tank script and it plays.