A friend who does conservation in Zambia has asked me about keeping shotshells dry:

"the scouts that work for me tried to fire off some rounds while they were arresting some poachers last week. And nothing happened. So I got a quick tutorial from an semi-ex-mercenary friend and identified the problem: wet ammunition.

How do people normally solve this problem? They guys are using pump action shotguns and carry the shells around separately, so the shells are I think prone to getting wet."

These shells are likely to be carried for years before being used and it is wet for six months of the year. Any suggestions?

Many thanks.