VihtaVuori N555 Smokeless Rifle Powder 8 Lb by Vihtavuori We now carries the VihtaVuori Smokeless Rifle Powder 8 Lb. The VihtaVuori N555 Smokeless Rifle Powder 8 Lb is designed for precision rifle platforms chambered in cartridges such as 6mm Creedmoor, 6.5 Creedmoor, .284 Winchester, .260 Remington and .30-06 Springfield and for rifle calibers with large case volume and comparatively small bullet diameters, among others. Competitive shooters and hunters will benefit from the powder’s insensitivity in extreme weather conditions. The most temperature stable reloading powder in its class, N555 features unprecedented performance in the 6.5 Creedmoor. Like all our reloading powders, N555 includes an anti-fouling agent that minimizes barrel fouling to extend the length of your competitive shooting stages. The unmatched lot-to-lot consistency of the N555 also eliminates costly range time re-developing your favorite loads. The energy content of N555 is 3.700 J/g, bulk density is 900 g/l.The burn rate of N555 is between N550 and N160.