TYPE Flattened Spherical Double Base Powder BURNING RATE Slow PERFORMANCE BENCHMARK Norma 204 ? IMR 4831 / Vihtavuori N550 APPLICATION Multipourpose rifle powder, best suited for various cartridges, in different calibers, with medium-high capacity cases and high intensity cartridges . To be used also in old military rifles. Needed Magnum primers and bullet crimp. BEST USED FOR 22-250 ; 7x57; 308 Winchester; 7,5x55; 8x57 JS ; 30-06; 7x64; 6,5x57; 6,5x55; 300 WSM .