The burn up level of your powder is a little bit closer to N570, roughly splitting the difference between The 2. Vihtavuori N565 is a single perforated extruded powder, getting a bulk density of 960 g/l and an Strength content material of 4000 J/g. Vihtavuori's N565 is actually a N500 https://ammoand-supply.com/product/vihtavuori-n165/