DOMESTIC SCHEDULED SERVICE: firearms and ammunition for hunting and sporting purposes, checked baggage only, if unloaded, safety catch "on," and suitably packed; firearms and ammunition for any other purpose are prohibited from carriage as baggage. INTERNATIONAL CHARTER: firearms of any description are carried only with the carrier's prior consent; firearms for sport purposes will be carried if the passenger possesses the required permit/licence and the firearm is disassembled or packed in a suitable case.
The domestic tariff restricts acceptance to firearms "for hunting and sporting purposes" and prohibits any other-purpose firearm/ammunition outright. The international charter tariff instead speaks of "firearms of any description" carried only with prior consent, and separately permits sport-purpose firearms with a licence/permit - a broader starting category (any description) gated by consent, rather than a flat hunting/sporting-only rule. Not resolved here.
Tariff (contract of carriage)Firearms and ammunition other than for hunting or sporting purposes are prohibited from carriage as baggage.
Tariff (contract of carriage)Firearms of any description. Firearms for sport purposes will be carried as baggage provided the passenger possesses the required permit/licence
Follow the stricter of the two. Meeting the tougher requirement satisfies both, and the contract of carriage is what the airline can enforce at the counter.