Between the safe and the closet floor sits a category of honest storage: steel cabinets, wall and floor racks, and modular systems that organize rifles, pistols and ammunition properly. Cabinets deter and organize where a full safe is impractical - apartments, second locations, overflow from a safe already packed.
Pair a cabinet with locks for layered control, and remember ammunition stores best cool, dry and separate. Ask either store about what fits your space.