Bundles of Energy

There is probably nothing more impressive than the 12/76 OpalMagnum. Equipped with a 43,0 g / 666 grs slug, it proves extremely powerful with 2.173 Joule of energy at 100 m.


Available calibers
12/76(43,0 g /666 grs)

Power of precision:

  • 5 shots are placed within 10 cm groups at 100 m
  • broad ribs reinforce the angular momentum

Special unit in action

We recommend this speciality slug for shotguns with cylindric barrels. It can be used with smooth and rifled barrels, however not with a choke. As an additional advantage lead abrasion in the barrel is reduced by a special coating of the point.


When hunting heavy and dangerous game such as buffalo or lion this is your perfect choice. OpalMagnum slugs must not be used with a choke.

  • 12/76
Ballistic Data
Distance 0 25 50 75 100
Velocity (m/s) 491 433 384 345 318
Energy (J) 5184 4026 3166 2564 2173
Trajectory (cm) -5,00 +1,10 +4,00 +2,70 -3,80
Caliber Packaging unit Weight Item No.
12/76 5 units 43 g/666 grs 120416

Sale of ammunition to holders of appropriate permits and authorizations only.

Fire or projection hazard.
Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
Keep only in original container.
Fight fire with normal precautions from a reasonable distance.

Slug Construction

Check the original BRENNEKE quality features of an OpalMagnum slug:

  • Lead point with with broad ribs to reinforce the angular momentum
  • Patented rear that slides into the point after impact
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