Nitrox
Those light guns should only be used if you have some with you who has a real rifle to back you up , sooner or later you will need them , I don,t think you lean any thing on one hunt !
I think you hunted at the end of the dry when most of the cover has burnt off or died down
there are very thick jungle areas up there & thick Mangrove forest & around salt pans
Useing light rifles on Big Bull Bovines with out back will get you hurt one day , like the guys who shot deer with 243s which works until they loss a big trophy stag , which know one knows about , but it,s hard to hide a good stomping !!