How should I store my ammunition/powder?

We recommend in a cool place at a constant temperature (12-15°C) and approx. 50 per cent relative humidity. The chemicals in the powder slowly start to decompose after about 20 years. If you store the powder at a high or fluctuating temperature, this process starts earlier.

Introduction To Norma-USA:

Norma Oryx:

Norma Kalahari: