It i designed to be fired even from choked and rifled.
It acts like an under-gauged.
The SuperMagnum combines the advantages of a classic slug with modern materials. It is an impressive piece of equipment with its specially alloyed lead head, which provides maximum penetrating power as a result of its hardness.
The rear portion guarantees optimal gas pressure distribution and perfect external ballistics. Maximum ballistic performance with very good precision and outstanding power is the result.