This dedication to quality ensures proper seating of the bullet both in the case and in the chamber and consistent charges and pressures. The result is optimal velocity and repeatable accuracy from your cartridges. New, unprimed brass. This is not loaded ammunition.
Special Note: The main difference between the 300 AAC Blackout and the 300 Whisper is the Blackout has a longer throat. Whisper brass can be used to load ammunition that will work in rifles chambered for 300 AAC Blackout