Free: Contests & Raffles.
Stainless Steel firearms is what I'd bring regardless of type of case.
Dry bags work ya...but a standard soft gun case will work... something that float's..Your gun is going to be wet regardless...last thing u want is to stash it in a non breathable dry bag...keep it oiled and you'll be fine..we brought ours in soft cases, smashed em in a pleican case for the commercial flight...took soft cases in the field.