The N530 is the fastest burning of all Vihtavuori high-energy rifle powders. It’s a great choice for the reloading hunter when flat trajectory and reasonable velocity is needed. N530 is also an ideal rifle powder for many of the smaller bottle-necked cases like the .223 Rem or some other 5,56 mm solution, or for large straight-walled cases such as the .45-70 Springfield. It is also a good powder for medium capacity cases like the .308 Win. when using lighter weight bullets of 155 grains or less.