I have a question about ammo that rides in my .44 mag revolver. How long do you keep it in the gun before you should put it on the shelf or replace it with new ammo? The reason I ask is I don't shoot my .44 every year, it is on my side all the time while hunting and fishing and it sees a lot of elements from rain, sleet, snow and sun/heat. I clean the gun regularly. It would really be a bummer if I get in a pickle and need to touch a round off and it does nothing.... I have the 330 grain HSM ammo. Wondering what others have done or suggest.