C# More Accurate or Larger Raycast

I switched from Raycast to SphereCast and the console says I have some invalid arguments.What do I need to change to get this to work properly?

public float Distance = 100;

public Ray ray;

public RaycastHit hit;

if(Physics.SphereCast(ray, out hit, Distance))

I linked to the documentation. It shows how to call the function. You need to give it a radius, for example.

Ok I've made a functional spherecast.But it doesn't seem to be any better. In fact it seems like it's worse.

if(Physics.SphereCast(gameObject.transform.position, 10f, Vector3.forward, out hit, Distance))

um wow...

10 is big, 10 is a CRAZY big radius. 10 is possibly that object is inside the radius to start with.

10 is 10 meters, 30 feet. to hit something and be off by 30 feet is a pretty big rough estimate hit.

unless your firing at a space ship or something I suggest you bring the radius down to like .5 and try again.

also vector3.forward is forward in world space if you use

transform.forward you can forward for the object not the whole world.

I updated my script.But it still doesn't seem that inaccurate.

if(Physics.SphereCast(gameObject.transform.position, 5, transform.forward, out hit, Distance))