I don't believe in the "leave the gun loaded" approach...and I also don't believe in firing off a rifle just to unload it...creates a cleaning job, calls unecessary attention to the area you're hunting, may cause concern to neighbors who hear it if after dark, etc, etc.

I either 'pull' the load with a ball puller, or blow it out with compressed air...then just wipe the bore, take it inside the warm dry house over night, start fresh the next with a fresh load that I know will go off, etc.