Norma USA Brass is world renowned as being the absolute highest quality brass available. These cases start off with the best possible raw materials with the narrowest tolerances. The case necks are annealed to soften the brass and prevent gas leaks the case body is at the optimum hardness to avoid any unnecessary stretching. New, unprimed brass that features chamfered and deburred case mouths and a punched flash hole (magnum calibers are drilled). These cases should be sized before loading. This is not loaded ammunition.
What Mauser Ammo and Reloading Components do I need?
MidwayUSA carries JS and JRS 8x57mm (8mm Mauser) ammunition and brass. The standard 8x57mm JS Mauser is by far the most common version of this cartridge, used in military and sporting bolt action rifles. The less-common JRS Mauser is a rimmed cartridge developed for double barrel rifles. If you have a bolt action 8mm Mauser, you will want 8x57mm JS Mauser ammunition and components.
Brass Preparation: With bulk rifle brass you may sometimes notice a few case mouths are “out of round” or slightly dented below the shoulder. These imperfections occur in the final tumbling wash operation after the case mouth has been annealed. Brass manufacturers are aware of the case cosmetics and have worked to mitigate it, but due to equipment design, denting may still occur. Minor dents are normally removed in the first firing and will not affect case life or performance. On non-plated brass, you may also notice all the anneal stain might not be polished off, which may give the case neck a pinkish color. With some smaller caliber cases you may notice the case mouths to be slightly belled.
With all new rifle brass, you should first straighten out the case and case mouth, then chamfer and debur the case mouth inside and out. To straighten the case mouth, run the case part way into the sizer die and let the expander ball straighten the brass. To prevent the case neck from stretching, be sure to lubricate the case neck inside the case mouth.