BIG nono storing in a case like that. Those things are moisture traps. If you are dead set on keeping it in there, invest in some silica bags and keep one or 2 in the case with the gun. Your best bet is a gun safe or or some sort of storage that you can put a dehumidifier in. I have several very old muzzle loaders that I have to be very particular with storage. Pretty much any gun case, soft or hard, are just for short storage for transport. There are some with silicone impregnated liners that are good. Sort of like gun socks.