Why is the Mouse Position always a little off in this projectile?

Hello, I'm trying to script a fireball projectile that goes towards the mouse position, and everything works, just not as I intended it to work. For some reason the fireball doesn't go to the mouse position exactly, it is always a little off. I don't think anything other than this part of the script is necessary, but if there is anything else I could provide just tell me and I'll edit the question.

I already tried to change the line 11 and replace it for: FireballVelocity.Velocity = (Target - Fireball.Position).Unit * 50

(Target being the Mouse.hit.p ) but it didn't fix it either.

FireballInput.OnServerEvent:Connect(function(Player, Target)
	local Character = Player.Character
	local HumanoidRootPart = Character.HumanoidRootPart
	
	local Fireball = ServerStorage.Fireball:Clone()
	Fireball.Parent = workspace
	Fireball.CFrame = HumanoidRootPart.CFrame * CFrame.new(0, 0, -5)
	
	local FireballVelocity = Instance.new("BodyVelocity", Fireball)
	FireballVelocity.MaxForce = Vector3.new(math.huge, math.huge, math.huge)
	FireballVelocity.Velocity = CFrame.new(HumanoidRootPart.Position, Target).lookVector * 50
	
	Debris:AddItem(Fireball, 2)
end)

Maybe try this.

mousehit = nil
FireballInput.OnServerEvent:Connect(function(Player, Target, Verd)
mousehit = Verd
	  local Character = Player.Character
	    local HumanoidRootPart = Character.HumanoidRootPart
	 
	    local Fireball = ServerStorage.Fireball:Clone()
	    Fireball.Parent = workspace
	    Fireball.CFrame = HumanoidRootPart.CFrame * CFrame.new(0, 0, -5)
	 
local FireballVelocity = Instance.new("BodyVelocity",Fireball)FireballVelocity .maxForce = Vector3.new(math.huge,math.huge,math.huge)FireballVelocity .Velocity = CFrame.new(projectileknife.Position.mousehit).lookVector*50

	 
         Debris:AddItem(Fireball, 2)
end)