12G Gamebore Mammoth Magnum 3.5 Steel (10)

Gamebore Mammoth Steel 3.5” is the ultimate wildfowl load with high velocity and 1 ½ oz of large size steel shot. This load will knock down geese at 60yds.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.

Available in shot size BB, 1, 3