Making mousehit more accurate?

Ive got an issue with things not really moving towards the mouse very accurately. They will move in the general direction but not where the mouse is aiming, forcing players to aim really low. Is there a better way to send something towards where the player is aiming?

local script:

function Keys(key)
	local Key = key:lower()
	if key == "z" then
		script.ZMove:FireServer(mouse.Hit)
	end
	if key == "x" then
		script.XMove:FireServer(mouse.Hit)
	end
	if key == "c" then
		script.CMove:FireServer(mouse.Hit)
	end
	if key == "b" then
		script.BMove:FireServer(mouse.Hit)
	end
	if key == "v" then
		script.VMove:FireServer(mouse.Hit)
	end
end

(this isnt the whole script but it's the relevant parts)

server script:

			local Lance1 = game.ReplicatedStorage.Fruits.FlameStuff.FireLance:Clone()
			Lance1.CFrame = Player.Character.HumanoidRootPart.CFrame*CFrame.new(1,0,0)
			Lance1.Parent = Player.Character.AttackFolder
			local Lance2 = game.ReplicatedStorage.Fruits.FlameStuff.FireLance2:Clone()
			Lance2.CFrame = Player.Character.HumanoidRootPart.CFrame*CFrame.new(-1,0,0)
			Lance2.Parent = Player.Character.AttackFolder
			Lance1.MeleeDamage.Disabled = false
			Lance2.MeleeDamage.Disabled = false
			local BV = Instance.new("BodyVelocity")
			BV.MaxForce = Vector3.new(math.huge,math.huge,math.huge)
			BV.Velocity = mousehit.LookVector*80
			BV.Parent = Lance1
			local BV2 = BV:Clone()
			BV2.Parent = Lance2

(again not the whole script, but the relevant parts)

Thanks for reading