The Clay Cartridge Range: - Note our Cartridges quote actual speeds to CIP protocols unlike most UK cartridges so they are probably faster than what you use.

The Magic Bore range of Cartridges are all designed to be the best at their level. You get better components than any other cartridge at the same price level and often higher. All Magic Bore cartridges have the recoil reducing 8 star  crimp. All are very fast but are softer on the shoulder. All but the budget cartridges have Nickel plated shot as it is proven to produce the best patterns.

  • Magic Bore Platinum – The best just got better – Designed for the UK

  • A first – 2 cartridges designed to be the complete package for everything you will encounter. Designed to be the best of the best- using all the best components and at the perfect speed and recoil. The Platinum is designed for the longer targets.

  • Nickel Coated 5% Antimony Shot UK Shot Size 7

  • 16mm Gold coloured head

  • 8 Star Crimp - reduces recoil significantly

  • Dark blue case – Gold text

  • 400m/s measured at CIP standards of 2.5m from the muzzles.

£319 per 1000
Coming soon
  • Magic Bore Platinum Bior – The best just got better – Designed for the UK

  • An upgraded M Comp Blue Bior. Designed to be the best of the best- using all the best components and at the perfect speed and recoil. The Platinum Bior is designed for targets up to 60 yards due to the Nickel shot.

  • Nickel Coated 5% Antimony Shot UK Shot Size 8

  • 16mm Silver coloured head

  • 8 Star Crimp - reduces recoil significantly

  • Translucent light blue case - Black Text

  • Bior Wad

  • 400m/s measured at CIP standards of 2.5m from the muzzles.

£319 per 1000
Coming soon

The M Competition Range - The best of the best.

The M competition range has been designed without compromise. These Cartridges use only the best components available to produce the Ultimate loads. They all feature the Recoil Reducing 8 Star crimp exclusive to Mary Arm. 5% antimony shot in all the range. Nickel coated shot in three of the range to produce the best patterns possible at longer ranges. All speed matched so you can change seamlessly between any of the range and not notice any difference.

  • M Competition Orange - World Record Equalling. 

  • Nickel Coated 5% Antimony Shot UK Shot Size 8

  • 25mm Silver coloured head

  • 8 Star Crimp - reduces recoil significantly

  • Translucent orange case - Black Text

  • 405m/s measured at CIP standards of 2.5m from the muzzles.

£330 per 1000
in stock
  • M Competition Light Green - The best extreme/long rage clay cartridge available

  • Nickel Coated 5% Antimony Shot UK Shot size 6.75

  • 25mm Silver coloured head

  • 8 Star Crimp - reduces recoil significantly

  • Translucent Light Green case - Black Text

  • 405m/s measured at CIP standards of 2.5m from the muzzles.

£330 per 1000
in stock
  • M Competition Dark Green - Bior Wad - For those who like a UK 9

  • Nickel Coated 5% Antimony Shot UK Shot size 9

  • 16mm Silver coloured head

  • 8 Star Crimp - reduces recoil significantly

  • Translucent Dark Green case - Black Text

  • 400m/s measured at CIP standards of 2.5m from the muzzles.

£330 per 1000 Bior Wad
in stock
  • M Competition Light Blue - Bior Wad - The previous best All round cartridge on the market before the platinum - Anything up to 50 yards

  • 5% Antimony Shot UK Shot size 8

  • 16mm Silver coloured head

  • 8 Star Crimp - reduces recoil significantly

  • Translucent Light Blue case - Black Text

  • 400m/s measured at CIP standards of 2.5m from the muzzles.

£314 per 1000 Bior Wad
in stock
  • M Competition Purple - Piston Wad our go to for longer range targets

  • 5% Antimony Shot UK Shot size 7.25

  • 16mm Silver coloured head

  • 8 Star Crimp - reduces recoil significantly

  • Translucent Purple case - Black Text

  • 400m/s measured at CIP standards of 2.5m from the muzzles.

£314 per 1000
in stock
  • M Competition Red - Bior Wad - Cheryl's Sportrap Cartridge

  • 5% Antimony Shot UK Shot size 6.5

  • 16mm Silver coloured head

  • 8 Star Crimp - reduces recoil significantly

  • Translucent Red case - Black Text

  • 400m/s measured at CIP standards of 2.5m from the muzzles.

£314 per 1000 in stock
  • M Competition Pink - The Best FIBRE wad Clay cartridge available

  • 5% Antimony Shot UK Shot size 7.5

  • 16mm Silver coloured head

  • 8 Star Crimp - reduces recoil significantly

  • Pink case - Black Text

  • 395m/s measured at CIP standards of 2.5m from the muzzles.

£330 per 1000
pre order only
  • M Competition 24gram 

  • 5% Antimony Shot UK Shot size 7.5

  • 16mm Silver coloured head

  • 8 Star Crimp - reduces recoil significantly

  • Translucent Grey - Black Text

  • 420m/s measured at CIP standards of 2.5m from the muzzles.

£307 per 1000
pre order only

Budget Conscious - Max Performance. 

  • Premium 28 grams - Mary Arm's top end cartridge pre M Comps

  • 3% Antimony Shot UK Shot size 7.5 & 8

  • 20mm Silver coloured head

  • 8 Star Crimp - reduces recoil significantly

  • Purple Case - Silver Text

  • 405m/s measured at CIP standards of 2.5m from the muzzles.

£290 per 1000
pre order
  • Cryano Competition

  • 3% Antimony Shot UK Shot size 7.5

  • 16mm Silver coloured head

  • 8 Star Crimp - reduces recoil significantly

  • Black Case - Silver Text

  • 402m/s measured at CIP standards of 2.5m from the muzzles.

£280 per 1000
in stock

Low Price - Great Performance. 

Cryano%20Bior_edited.png
  • Cryano - Bior - Cheapest Bior Wad Cartridge in the UK

  • Same spec as Hull Piston

  • 3% Antimony Shot UK Shot size 8

  • 12mm Brass head

  • White Case - Black Text

  • 400m/s measured at CIP standards of 2.5m from the muzzles.

  • Cryano Bior Tested in Clay Shooting Magazine February 2021.

£255 Bior Wad
coming soon
UK Best Seller

Richard Atkins test result: "The laboratory report reveals are very respectable set of results with a velocity level above the ‘magic’ figure of 400m/s. That is seriously quick; fortunately the recoil I felt in the restricted time available for me to shoot these particular cartridges did not reflect this and I found the CYRANO quite comfortable to shoot. For closer targets, which BIOR cartridges are usually used for, opening up the chokes could be a good idea too. I would have like more time with the BIOR but the results here speak for themselves."

  • Cryano - The best value Cartridge on the market.

  • Same spec as Hull Sovereign

  • 3% Antimony Shot UK Shot size 7.5, 8 and 9.

  • Top end Vectan Powder

  • 12mm Brass head

  • White Case - Coloured text depending on shot size

  • 395m/s measured at CIP standards of 2.5m from the muzzles.

£250 per 1000
all sizes in stock
UK Best Seller

Light Loads

  • M Competition 24gram 

  • 5% Antimony Shot UK Shot size 7.5

  • 16mm Silver coloured head

  • 8 Star Crimp - reduces recoil significantly

  • Translucent Grey - Black Text

  • 420m/s measured at CIP standards of 2.5m from the muzzles.

  • Premium 24gram

  • 5% Antimony Shot UK Shot size 7.5

  • 20mm Silver coloured head

  • 8 Star Crimp - reduces recoil significantly

  • Light Green Case - Silver Text

  • 420m/s measured at CIP standards of 2.5m from the muzzles.

  • Cryano 24gram

  • 3% Antimony Shot UK Shot size 7.5

  • 20mm Silver coloured head

  • White Case - Blue Text

  • 410m/s measured at CIP standards of 2.5m from the muzzles.

  • Magic Bore Sim Special 21gram - Low Recoil

  • 3% Antimony Shot UK Shot size 7.5

  • 10mm Silver coloured head 67mm long case

  • 8 Star Crimp - reduces recoil significantly

  • Red Case - Black Text

  • 385m/s measured at CIP standards of 2.5m from the muzzles.

  • Shooting Academy 21gram

  • 3% Antimony Shot UK Shot size 7.5

  • 12mm Silver coloured head

  • White Case - Blue Text

  • TBC m/s measured at CIP standards of 2.5m from the muzzles.

£307 per 1000
pre order only
£277 per 1000
pre order only
£254 per 1000 
coming soon
£230
Fibre Wad
in stock
£234 per 1000
in stock

Fibre Wad Clay Cartridges

3D%20Magic%20Bore%20Fibre%20Max%2028G_ed
  • Magic Bore Fibre Max 28gram

  • 3% Antimony Shot UK Shot size 7.5

  • 16mm Silver coloured head

  • 8 Star Crimp - reduces recoil significantly

  • Blue Translucent Case - Silver Text

  • 395m/s measured at CIP standards of 2.5m from the muzzles.

  • M Competition Pink - FIBRE

  • 5% Antimony Shot UK Shot size 7.5

  • 16mm Silver coloured head

  • 8 Star Crimp - reduces recoil significantly

  • Pink case - Black Text

  • 395m/s measured at CIP standards of 2.5m from the muzzles.

  • Magic Bore Sim Special 21gram - Low Recoil

  • 3% Antimony Shot UK Shot size 7.5

  • 10mm Silver coloured head 67mm long case

  • 8 Star Crimp - reduces recoil significantly

  • Red Case - Black Text

  • 395m/s measured at CIP standards of 2.5m from the muzzles.

£252 per 1000
Fibre Wad
in stock
£330 per 1000
Fibre Wad

pre order only
£230 per 1000
Fibre Wad
in stock

Smaller Gauge Clay Cartridges

  • M Competition 20 Gauge

  • 5% Antimony Shot 26 Grams UK Shot Size 7.5

  • 16mm Silver coloured head

  • 8 Star Crimp - reduces recoil significantly

  • Translucent Yellow Case - Black Text

  • 400m/s measured at CIP standards of 2.5m from the muzzles.

  • M Competition 20 Gauge Bior - The UK's only two 20 Bore Bior

  • 5% Antimony Shot 26 Grams UK Shot Size 8

  • 16mm Silver coloured head

  • 8 Star Crimp - reduces recoil significantly

  • Translucent Light Yellow Case - Black Text

  • 400m/s measured at CIP standards of 2.5m from the muzzles.

  • Sporting 20 Gauge

  • 3% Antimony Shot 28 Grams UK Shot Size 7.5

  • 8mm Brass coloured head

  • Yellow Case - Black Text

  • 390m/s measured at CIP standards of 2.5m from the muzzles.

  • Sporting 20 Gauge Bior - The UK's only two 20 Bore Bior

  • 3% Antimony Shot 28 Grams UK Shot Size 8

  • 8mm Brass coloured head

  • Light Yellow Case - Black Text

  • 390m/s measured at CIP standards of 2.5m from the muzzles.

£340 per 1000 
pre order only
£350 per 1000 Bior Wad
pre order only
£306 per 1000
in stock
£316 per 1000 Bior Wad
pre order only

Steel Shot Clay Cartridges

  • Starsteel 28 Grams

  • Steel Shot 28 Grams UK Shot Size 7 or 8

  • 12mm Brass coloured head

  • Red Case - Silver Text

  • 415m/s measured at CIP standards of 2.5m from the muzzles.

  • Diamsteel 24 Grams

  • Steel Shot 28 Grams UK Shot Size 7

  • 12mm Brass coloured head

  • Purple Case - Black Text

  • 425m/s measured at CIP standards of 2.5m from the muzzles.

  • Regiasteel 20 Gauge

  • Steel Shot 24 Grams UK Shot Size 7

  • 12mm Brass coloured head

  • Yellow Case - Black Text

  • 405m/s measured at CIP standards of 2.5m from the muzzles.

£256 per 1000
pre order only
£243 per 1000
pre order only
£275 per 1000
pre order only