12G Mammoth Magnum Steel
Shotgun Cartridge
Ultimate Performance Steel 3 1/2"
Mammoth Steel 3.5” is the ultimate wildfowl load with high velocity and 1 ½ oz of large size steel shot. This cartridge uses double based propellant exclusively imported from the USA. This ensures Gamebore uses the latest advances in steel powder technology to offer truly High Performance steel loads.
- 42gms/3 (3.5mm) *High Performance. Steel Proofed Shotgun with Fleur de Lys stamp. CIP regulations state No Choke Restrictions however we strongly advise Half Choke Maximum
- 42gms/1 (4mm) *High Performance. Steel Proofed Shotgun with Fleur de Lys stamp. Half Choke Maximum.
- 2gms/BB (4.5mm) *High Performance. Steel Proofed Shotgun with Fleur de Lys stamp. Half Choke Maximum.
*Steel MPS Velocity calculated at Muzzle and falls within MAXIMUM CIP Momentum.
High Performance Steel
High Performance Steel ammunition can only be used in shotguns bearing a CIP Fleur de Lys proof mark. CIP recommends a MAXIMUM choke of half (.5mm) for shot sizes 4mm and larger. Please see above for Gamebore's own recommendations based on product performance, experience and safety.
All cartridges should be stored at room temperature in a dry location. Adverse temperatures may affect performance. Do not expose to extreme temperatures.
Steel Shot Sizes
Technology
Precision Steel
Soft steel shot to CIP regulations from one of the world's leading manufacturers for exacting standards. Reliably consistent in its sphericity and size for outstanding patterns.
Alliant Powder
Exclusive to Gamebore in Europe. High technology, cutting edge double base (nitroglycerin) powders allow us to develop and manufacture high performance loads without excessive perceived recoil. Alliant powders feature in our small gauge loads, high performance heavy weights, premium steel and non toxic cartridges. These loads simply cannot be replicated by using single based propellant.
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.
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.
High Velocity
Cartridges with high velocity are ideal for performance use and demanding disciplines where targets are at range.
