VihtaVuori N540 is a bulk-sized, mid-range high-energy smokeless rifle powder optimized for a broad spectrum of medium-sized cartridges. As part of the advanced N500 series, it incorporates nitroglycerine into its nitrocellulose base to achieve velocities up to 30–40 m/s higher than comparable single-base propellants without raising chamber pressure levels. The powder features perfectly symmetrical, single-perforated grains measuring exactly 1 mm in length and 1 mm in diameter. This uniform size allows the propellant to meter smoothly and consistently through standard reloading volumetric powder measures. It burns clean, delivers precise accuracy, and is highly effective when pushing heavy bullets in calibers such as the .223 Remington, 6.5 Creedmoor, and .308 Winchester. VihtaVuori N540 Hight Energy Rifle Powder 8lb Canister T54080