Federal Guard Dot Ammunition .40 S&W 135 Grain Guard Dog Expanding 20 rounds per box/200 per case (Free Shipping) Details: Guard Dog 40 S&W ammo for sale is a new production ammo that features 135 Grain GDX bullet. 40 Cal ammo by Federal is reloadable, features brass cases and Boxer primers. This ammunition is non-corrosive. …