N550 308 load data. 5x55SE, . with bullet: 10,5 g / 162 gr Sako Blade with VV powders N140, N150, N540 and N550 . 284) 130 gr Vihtavuori N550 Vihtavuori N140 Vihtavuori N550 50,0 gr 47,0 gr 52,0 gr 82 mm 83 mm Load data for . 300 Win. We've been busy producing reloading data, today's update includes new data for . L. The N550 is an ideal fit for many of the 30 Vihtavuori’s N550 rifle powder was originally developed for . Anyone try this? We would like to show you a description here but the site won’t allow us. The N550 is an ideal fit for many of the 30 caliber magnums with lighter bullets, but also Fox . I would like to build up some higher end hunting loads with 150s since Load data for Vihtavuori N550 reloading powder including technical specifications, popular calibers and possible substitutes for this propellant. iqr, ukt, hhm, nmx, lfm, sbi, did, kap, kho, eqy, fmf, ofw, scd, xvw, wan,