bullets don't go forward

I need help, my bullets when they start colliding with objects deviate the next time they are activated. I do not understand why

my code is:

 [Header("ObjectPool")]
 [SerializeField] GameObject bulletPrefab;
 GameObject parentObj;

 int poolSize;

 [SerializeField, HideInInspector] List<GameObject> bulletList;

 private static WeaponeBSc instance;
 public static WeaponeBSc Instance{ get { return instance; } }


 [Header("Weapone Settings")]
 [SerializeField]  bool isAuto;

 [SerializeField] float
 bulletForce,
 reloadTime,
 bPS;

 [SerializeField] int
 maxCantMag,
 maxDistance;

 [SerializeField] GameObject canon;

 bool
 isFire,
 isReload;

 int
 magCant,
 bulletCant;

 float
 fireRate,
 nextFire = 0f,
 isReloadingTime;

 GameObject playerCam, poolObj;

 private void Awake(){
     if(instance == null){
         instance = this;
     }
     else{
         Destroy(gameObject);
     }
 }

 void Start(){
     parentObj = GameObject.FindWithTag("PoolContainer");

     poolObj = new GameObject("Pool");
     poolObj.transform.parent = parentObj.transform;

     poolSize = Mathf.RoundToInt(bPS * 3);

     isReload = false;
     isReloadingTime = reloadTime;

     fireRate = 1 / bPS;
     nextFire = fireRate;

     bulletCant = maxCantMag * 10;
     magCant = maxCantMag;

     AddBulletsToPool(poolSize);

     playerCam = GameObject.FindWithTag("MainCamera");
 }

 void Update(){
     RaycastHit fireRay;
     if(!Physics.Raycast(canon.transform.position, canon.transform.forward, out fireRay, .6f)){
         if(isAuto){if(Input.GetMouseButton(0) && nextFire < Time.time && magCant > 0 && isReload == false){Shoot();}}
         else{if(Input.GetMouseButtonDown(0) && nextFire < Time.time && magCant > 0 && isReload == false){Shoot();}}
     }

     Reload();
 }
 
 //Shoot
 void Shoot(){
     GameObject bullet = RequestBullets();
     bullet.GetComponent<BulletSc>().rb.AddForce(playerCam.transform.forward * bulletForce, ForceMode.Impulse);
     bullet.transform.position = canon.transform.position;
     magCant -= 1;
     nextFire = Time.time + fireRate;
 }

 //Reload
 void Reload(){
     if(Input.GetKeyDown(KeyCode.R) && isReload == false && isReloadingTime < Time.time){
         isReload = true;
         magCant = maxCantMag;
         bulletCant -= maxCantMag;
         isReloadingTime = Time.time + reloadTime; 
     }
     if(isReloadingTime < Time.time)
         isReload = false;
 }

 //Bullets
 void AddBulletsToPool(int ammount){
     for(int i = 0; i < ammount; i++){
         GameObject bullet = Instantiate(bulletPrefab);
         bullet.SetActive(false);
         bulletList.Add(bullet);
         bullet.transform.parent = poolObj.transform;
     }
 }
 GameObject RequestBullets(){
     for(int i = 0; i < bulletList.Count; i++){
         if(!bulletList[i].activeSelf){
             bulletList[i].SetActive(true);
             return bulletList[i];
         }
     }
     AddBulletsToPool(1);
     bulletList[bulletList.Count - 1].SetActive(true);
     return bulletList[bulletList.Count - 1];
 }