Linecast from raycast hit point

I am currently creating a simple script for a pistol required in my college project, I have everything working apart from one of the visual effects, which when implemented causes odd behavior. What I am trying to achieve is to use a raycast to any object not in the water layer, then apply a particle effect at that point and a force if it has a rigidbody. All of this is working fine but after that I want to cast a line cast from the point the gun to the point the raycast hit and check for a water surface in-between, if there is one create a splash effect. Although this works as intended when I use this method if I shoot at a an object and there isn't water between it and the gun, the weapon fires very rapidly without depleting any ammo and I can't work out why.

The following function is called when the mouse button is pressed:

 function Fire()
 {
     if(bulletsLeft==0)
         return;
     if(Time.time - fireRate > nextFireTime)
         nextFireTime = Time.time - Time.deltaTime;
     while(nextFireTime < Time.time)
     {
         FireOneShot();
         nextFireTime += fireRate;
     }
 }

and the Fire one shot function is as follows:

 function FireOneShot()
 {
     if(audio)
     {
         audio.Play();
         audio.loop = false;
     }
     
     var direction = transform.TransformDirection(Vector3.forward);
     var hit : RaycastHit;    
     
     //Test for hit
     if(Physics.Raycast(transform.position, direction, hit, range, notWaterLayer))
     {
         //Apply force to any hit objects
         if(hit.rigidbody && hit.collider.gameObject.tag != "Boat")
             hit.rigidbody.AddForceAtPosition(force * direction, hit.point);
         
         //Apply Sparks
         if(hitParticles)
         {
             hitParticles.transform.position = hit.point;
             hitParticles.transform.rotation = Quaternion.FromToRotation(Vector3.up, hit.normal);
             hitParticles.Emit();
         }
         //Send damage to hit object
         hit.collider.SendMessageUpwards("ApplyDamage", damage, SendMessageOptions.DontRequireReceiver);
         
         if(Physics.Linecast(transform.position, hit.point, hit, waterLayer));
             hit.collider.SendMessageUpwards("splash", hit.point, SendMessageOptions.DontRequireReceiver);
     }
     
     //Check for water
     else if(Physics.Raycast(transform.position, direction, hit, range, waterLayer))
         hit.collider.SendMessageUpwards("splash", hit.point, SendMessageOptions.DontRequireReceiver);
     
     //Take 1 from the remaing bullets
     bulletsLeft--;
     
     //Register that the player shot this frame for muzzle effects
     m_LastFrameShot = Time.frameCount;
     enabled = true;
     
     //Reload if you run out of ammo
     if(bulletsLeft==0)
         Reload();
 }

Via comenting out various sections of the code I have found it is the Linecast itself causing the issue as when that line is removed the rest functions as I would hope it to.

Thanks, Langy