It i designed to be fired even from choked and rifled.
It acts like an under-gauged.
The Black Magic Magnum (12 GA 3) is of the most powerful slug available on the market. It offer tremendous knockdown power up to 100/60 yards.
The Black Magic Magnum is your live insurance against big and/or dangerous game.
Calibre: 12 GA 3
Weight: 1 3/8oz, 600 grs, 39g
barrel: smooth and rifled
range: up to 100 yards