Circular Bullet Spread for Shotgun / Bloom

Hello All, I am currently trying to make a shotgun script for my game. I want to add a bullet spread to each bullet. I want to bullet spread to be in a circle though not a square. The Shoot function is being called by an Animation event for those who are wondering. Anybody know how I can aproach / code this?

 [Header("Objects")]
 public GameObject bullet;
 public Transform barrel;
 public Transform cam;

 [Header("General")]
 public float bulletSpeed = 1000;
 public float bulletSpread = 1;
 public int pellets;
 public int damage;

 [Header("Audio")]
 public GameObject equipSound;

 [Header("Animation")]
 public Animator anim;


 void OnEnable()
 {
     EquipSound();
 }

 void Start()
 {
     EquipSound();
 }

 void Update()
 {
     if (!anim.GetCurrentAnimatorStateInfo(0).IsName("Equip"))
     {
         Animations();
     }
 }

 void Animations()
 {
     if (Input.GetButton("Fire1"))
     {
         anim.SetBool("isShooting", true);
     }
     else
     {
         anim.SetBool("isShooting", false);
     }

     if (Input.GetButton("Fire2"))
     {
         anim.SetBool("isAiming", true);
     }
     else
     {
         anim.SetBool("isAiming", false);
     }

 }

 void Shoot()
 {
     for (int i = 0; i < pellets; i++)
     {
         GameObject firedBullet = Instantiate(bullet, barrel.position, Quaternion.Euler(0, 0, 0));
         firedBullet.transform.parent = GameObject.FindGameObjectWithTag("PlayerBulletHolder").transform;

         firedBullet.GetComponent<PlayerBulletCollide>().damage = damage;

         Rigidbody rb = firedBullet.GetComponent<Rigidbody>();
         rb.AddRelativeForce(cam.forward* bulletSpeed);
     }
 }

 void EquipSound()
 {
     GameObject equipAudio = Instantiate(equipSound, transform.position, Quaternion.identity);
     equipAudio.transform.parent = GameObject.FindGameObjectWithTag("SoundHolder").transform;
 }