Want to insure you have some stable ammo stored up for the future? Super quality Wolf ammo with polymer coated case for smooth feeding and heavy sealed tin for long shelf life. All the ammo is FMJ, steel case, Berdan primed, non-corrosive, in 20 round boxes, sealed tin insures quality for many years. This ammo has polymer coated steel cases. Simply put, this is some of the best ammo on the market today at a great price. WOLF unveils the next generation ammunition with POLYFORMANCE™ an advanced technology polymer coating. All WOLF ammunition is backed by a 100% PERFORMANCE GUARANTEE. This advanced technology polymer coating offers: Superior Reliability: The application of the polymer creates a precision uniform coating around the casing. It produces a bullet with persistent, uncompromising, stable dimensions thus leading to smooth reliable extractions. Now featuring the renowned POLYFORMANCE Shoot with confidence and WOLF’s unmatched reliability backed by the industry's only 100% Performance Guarantee!!! WOLF Centerfire Rifle Ammunition is 100% non-corrosive and features a boat tailed projectile design for maximum down range energy retention and improved accuracy. The superior lubricity improvement eases wear in gun chambers and alleviates excessive operational and maintenance issues associated with rapid firing. The development of this polymer represents a break-through in the field of tribology, and incorporates the most recent chemistry in terms of lubricity improving molecules. Ammo restrictions: We do not sell ammunition to Hawaii, Alaska, Massachusetts; New York City; Washington, DC; or Cook County, Illinois. Please check your state and local laws before ordering ammunition.