Something

function SWEP:PrimaryAttack()
	Msg("Clip1: "..self.Weapon:Clip1().."\n")
	self:throw_attack("models/props_junk/rock001a.mdl")
	self:TakePrimaryAmmo( 1 )
	self.Weapon:SetNextPrimaryFire(CurTime() + 4)
	nextshoot = CurTime() + 4
	self.Owner:ViewPunch( Angle( -1, 1, 0 ) )
	isreloading = true
	if self.Weapon:Clip1() <= 0 then
		self.Owner:StripWeapon("ws_arrow")
	end
end

function Reloading()
	if isreloading then
		local width = nextshoot - CurTime()
		width = 4-width
		width = width * 50
		local client = LocalPlayer()
		draw.RoundedBox(3, ScrH()-5, ScrW()/2-200, 200, 100, Color(0, 0, 0, 100))
		draw.SimpleText("Reloading", "ScoreboardText", 0, 0, Color(0, 0, 0, 255), 0, 0)
		draw.RoundedBox(0, ScrH()-5, ScrW()/2-200,width , 100, Color(200, 200, 200, 255))
		if width > 200 then
			isreloading = false
		end
	end
end

hook.Add("HUDPaint", "Reloading", Reloading