my gun wont reload right, here is my script:

var projectile : Rigidbody;
var canshoot = 1;
var clone : Rigidbody;
var reloading = 0;
var ammo = 32;

function Update () {
    if (Input.GetKey("space")) {
if (canshoot == 1)  
        clone = Instantiate(projectile, transform.position, transform.rotation);
        clone.velocity = transform.TransformDirection (Vector3.left * 60);
       canshoot = 0;
       Invoke("CanShoot",0.1);
       ammo -= 1;
    }
    if (ammo == 0){
    reloading = 1;
    canshoot = 0;
    Invoke ("Reload",1);
   }
}

function CanShoot() {
if (reloading == 0)
canshoot = 1;
}

function Reload () {
ammo = 32;
reloading = 0;
canshoot = 1;
}

the gun shoots fine for the first clip, when it runs out of ammo it tries to reload and 1 second later when its reloaded it shoots every frame not every 0.1 seconds, what did i do wrong?