I decided to put my ammo in the safe, #1 to keep it close to the guns. #2 The only other place I could keep it, is in my garage, and it gets fairly cold out there during the winter, and pretty hot and humid during summer. I just thought it would be better protected in the safe, especially inside rubber sealed, steel military style ammo boxes. I probably should check with safe companies, and see what they think on the matter, but thanks for all the input and ideas on this.