Mark, this isn't what your OWMBO is going to want to hear, but here goes anyway!
I would only put firearms into a "gun cabinet" that you don't mind losing. Losing to theft or fire. Thieves relish the sight of a nice, glass front gun cabinet! Almost as easy as taking them from your closet! And, in the event of a fire, the gun cabinet and your "toys" are a goner!
Not very encouraging, am I? But, I hope you see the realism in this.
Get yourself a good quality gun safe with at least a 30 minute fire rating (mine is a Fort Knox) and you'll never regret the decision. And, you'll be able to hand your quality firearms down to your grandchildren.
Build the OWMBO a nice hutch or corner cabinet. You'll both be happier!!
Just my 2CW!
:notworthy: