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12G Dark Storm™

Ultimate Performance Competition

Building on the blistering performance of the 28grm Dark Storm™ game load, this competition load is designed for extreme Sporting clay targets and FITASC, delivering devastating performance and patterns at the longest ranges. Loaded with Gamebore's exclusive Diamond Shot®.

Plus NEW for 2022, Black Gold Dark Storm fibre wad loads now feature our renowned Quad Seal technology. 

"Quad Seal has completely revolutionised the way fibre wad cartridges perform, making them as good as, if not better than plastic wad cartridges". - George Digweed MBE

Continental sized Diamond Shot®

All cartridges should be stored at room temperature in a dry location. Adverse temperatures may affect performance. Do not expose to extreme temperatures.



Ultra high performance with a muzzle velocity of 1550 feet per second.


Diamond Shot

Our precision shot produced here at Gamebore. Graded 5 times.


Designed & Developed by Gamebore for Gamebore

How The Quad Seal Works

The unique four-ring design of the Quad Seal gives four times the sealing area compared with a conventional plastic wad.

Find out more

Technical performance

Velocity x Distance

The following graph shows the relationship between Velocity (MPS) and Distance (M) for the shot selected from the table below.

Cartridge Load gms Shot Size WAD Length mm Muzzle Velocity FPS Velocity MPS V1
12G Dark Storm™ 28 7.5, 8 Fibre QS 20/70 1550 440
12G Dark Storm™ 28 6.5, 7.5, 8 Plastic 20/70 1550 440

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