When camping and hunting up in the mountains, we never unload at night unless the gun was shot or caught in a downpour.
Why would you want to spook the game you are hunting by shooting every night?
One of them co2 gizzies is just more stuff to carry, that might or might not work.
I always sight my gun in for a clean first shot, I can leave it loaded for days, with no problem.
At home, it is locked and tagged.......during hunting season.