Buffalo Bore Ammunition 35A20 Personal Defense 460 Rowland 185Gr Handgun Ammo - 20 Rounds - The .460 Rowland, is squarely at mid 44 magnum power levels. This means that a person can now carry a 1911 style combat pistol that has the power of a 44 mag. revolver, but is slimmer, faster to reload, faster to shoot and holds nine rounds instead of a revolver's six.