Lapua Unprimed Cases Features Lapua Unprimed Cases in .243 Win are engineered using advanced metallurgical research and precision manufacturing techniques that keep dimensions consistent through repeated reloading cycles. The base section is built hard and strong holding primers securely in the primer pocket even after multiple firings while the brass body remains easy to extract whether full sizing or only neck sizing during reloading. Strict tolerances in concentricity and wall thickness are maintained at the neck which is annealed to withstand the stress of repeated reloading without cracking. This construction makes the .243 Win case a dependable choice for hunters and varmint shooters who reload their own ammunition season after season. Each box contains 100 unprimed cases sized for large rifle primers giving reloaders a clean foundation to build their own precision loads. These cases are intended strictly for reloading and are not loaded ammunition so a handloader supplies their own primers powder and bullets. The .243 Win cartridge itself is known for mild recoil paired with flat shooting performance making it a versatile option for both long range varmint hunting and deer hunting with heavier bullet weights. For shooters who want the tightest tolerances and most consistent case life available Lapua brass remains a trusted choice for serious .243 Win load development. Lapua Unprimed Cases Specifications Manufacturer: Lapua Model: Unprimed Cases Caliber: .243 Win Material: Brass Primer Size: Large Rifle Quantity: 100-Count Available At: GrabAGun