Bullet not coming out of gun properly after rotation

Hey Guys,

So right now I have a cylinder that is attached to a sphere. I have them both children of an empty game object called join. As of right now, whenever I want to shoot a bullet, it comes out of the gun at the right spot, but as I rotate the joint (to rotate both the sphere and cylinder as a turret) the bullet still comes out of the original spot. Although it does record the right direction to go, I would like it to always come out at the end of the cylinder gameobject. Here is my code sofar:

using UnityEngine; using System.Collections;

public class ProjectileController : MonoBehaviour {

 public Rigidbody cannonball;
 float power;
 Vector3 force;
     
 void Start () {
     power = 100.0f;
 }
     
 void Update () {
     if (Input.GetKeyDown (KeyCode.Space)){
         force = gameObject.transform.forward * power; 
         Rigidbody instance = Instantiate(cannonball,transform.position+new Vector3(0,0,1)*2,transform.rotation) as Rigidbody;
         instance.AddForce( force );
     }    
 }
     

}

I would like to make the part where I instantiate the cannonball have a dynamic spawn. Instead of the Vector3(0,0,1)*2, which only makes the cannonball come out correctly from its original position. Hopefully that makes sense, and thanks!