Shop Sportsman's Guide for great value on .44-40 WCF Rifle Ammo and all of your firearm accessory needs at great low prices! .40-40 WCF Ammunition makes it easy to bring down big game! Use this .44-40 Ballistics Chart for the specifics on firing this ammo. Browse our selection .44-40 Winchester Center Fire ammo brands such as Hornady and Magtech.