12G Dark Storm Game

12G Dark Storm Game Shotgun Cartridge

The ultimate ammunition for game shooting featuring Diamond Shot and Quad Seal technology

Winner of the 2022 Great British Shooting Awards Ammunition of the Year. 

For the discerning game shooter who demands the very best, Gamebore’s Dark Storm with Quad Seal is the most ground-breaking development in modern cartridge manufacturing history. 

Taking the legendary performance of Dark Storm Game even further, the Quad Seal technology delivers unsurpassed knockdown power downrange, where it matters most.

Designed and developed in-house exclusively for Gamebore, the Quad Seal gives improved ballistic consistency, noticeably reduced recoil and increased striking energy, as well as being fully degradable, water soluble and 100% environmentally friendly. Our quad seal keeps our exclusively blended powders burning cleanly to give maximum pressure with a perfect gas seal for reliable results, precision and shooter comfort. 

Loaded with the world’s finest lead shot - Gamebore’s exclusive Diamond Shot, 5 x graded for size and spherical perfection - and our nickel plated head for smooth, easy ejection, the Dark Storm with Quad Seal takes our renowned Black Gold range to the next level and beyond. 

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

Diamond Shot Sizes

4 3.2mm
5 3mm
6 2.8mm

HD Casing

High density polymer plastic case designed to perform in our premium, high performance range to give easy loading and smooth ejection from a case made specifically for these demanding loads.

Diamond Shot - The world's finest quality lead shot

Exclusively made by Gamebore for Gamebore and not available in any other product for any other brand, our exceptional quality precision lead shot is produced in the only working shot tower left in the UK.

5x

Gamebore Wad System

Whether it's our state of the art plastic injection moulded wads, traditional fibre wads, or our exclusive and unique British lambswool wad, we only select wads that deliver the perfect gas seal, outstanding recoil reduction and performance to consistently deliver outstanding patterns across our range.

Power to Accelerate

Gamebore only uses the highest quality components available in our cartridges, carefully considering every last detail to deliver the ultimate performance. We?re proud to be at the forefront of developing cartridges with the aim of improving downrange speed and effectiveness without excessive pressures and recoil. We use a range of high quality powders including F2 which has become synonymous with outstanding performance. Produces maximum velocity up to 1500fps.

1500fps

Exclusive Technology

Gamebore's Quad Seal gives improved ballistic consistency, noticeably reduced recoil and increased striking energy. Fully degradable and 100% environmentally friendly.

100%

Primed for Performance

CX2000 Primers are the most highly consistent and reliable primer available. We use CX2000 Primers throughout all of our cartridges to give the shooter the utmost reliability and confidence.

Technology

Quad Seal

Quad Seal

The exclusive Quad Seal®. Delivering a level of ballistic consistency not previously achievable thanks to its revolutionary four-ring design. The Quad Seal reduces recoil, increases striking energy and is 100% environmentally friendly being fully degradable.

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Diamond Shot

Diamond Shot

Our precision lead shot is exclusive to Gamebore and produced in-house at the only working shot tower in the UK. Lead shot taken to the next level with this unique process-5x graded, then polished in a revolutionary method to produce shot of a consistency far beyond anything else available. Perfect in its sphericity and accurate, even size to deliver the ultimate in patterns. Simply put, Diamond Shot® is the highest quality lead shot in the world.

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M92s Powder

M92s Powder

Exclusive to Gamebore in the UK. The latest, cutting edge development in modern powder technology offers a longer, progressive burn to develop maximum velocity without excessive pressure or recoil, delivering simply outstanding performance at extreme ranges.

CX2000 Primer

CX2000 Primer

The most highly consistent and reliable primer available. We use CX2000 Primer throughout our range of shotgun cartridges to give the shooter the utmost reliability and confidence.

HD Case

HD Case

High density polymer plastic case designed to perform in our premium, high performance range. Delivering easy loading and smooth ejection from a case made specifically for these demanding loads.

Nickel Head

Nickel Head

Nickel plated heads to give smooth, consistent and reliable ejection in higher performance loads.

Fibre Wad

Fibre Wad

The highest quality, single piece, non fragmenting 100% fibre wads with no plastic components. Delivering excellent gas seals and patterns for a reliable environmentally friendly shoot.

Extended Range

Extended Range

Muzzle velocity is only part of the story - downrange energy is key to a cartridge's long range effectiveness. These cartridges are designed to deliver unsurpassed performance downrange where it matters most, giving knockdown performance others simply cannot match.

Power House Division

Power House Division

Gamebore's 'Power House' cartridges are developed using exclusive components and extensive R&D. Our ultra high performance loads are designed and developed to deliver the ultimate knockdown and velocity even at long range, representing the pinnacle in performance cartridges for those high, handsome birds.

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.

Load gms Shot Size WAD Length mm Muzzle Velocity FPS Velocity MPS V1
28 5, 6 Fibre QS 20/70HD 1525 440
30 4, 5, 6 Fibre QS 20/70HD 1490 432
32 4, 5, 6 Fibre QS 20/70HD 1475 426
34 4, 5 Fibre QS 20/70HD 1470 425
36 4, 5 Fibre QS 20/70HD 1460 424

Designed & Developed by Gamebore for Gamebore

How the Quad Seal Works

Designed and developed by our R&D division, the unique four-ring design of the Quad Seal gives four times the sealing area of a conventional plastic wad, retaining energy and giving improved performance with a smoother shoot.

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"I use Gamebore cartridges, particularly Dark Storm for clays and Dark Storm with Quad Seal for game, because I know first hand, the research and development that goes into producing a first-class cartridge. Gamebore excel in their efforts to produce the best"

Words from Pro Shot Dave Carrie

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