The VihtaVuori pistol powders are single base, porous powders that also meter well through most powder measures. A slow-burning handgun powder, N105 was developed specifically  for handgun cartridges with heavy bullets and /or large case volumes. Reloading data is currently available for: 9x21mm, .38 Super, .357 Mag, 357 Rem Max, .40 S&W, 10mm, .41 Rem Mag, .44 Rem Mag, .45 Long Colt, .45 Win Mag, .454 Casull.