What type of ammunition should I use in my Ruger .45 Auto pistol?
The Ruger P90, P97 and P345 pistols are chambered for the .45 Auto cartridge and are compatible with all factory ammunition loaded to U.S. industry standards, including high-velocity and hollow-point loads, loaded in brass, aluminum or steel cartridge cases, as well as +P ammunition. .45 Auto ammunition manufactured in accordance with NATO, U.S., SAAMI, or CIP standards is within the design limits and known to function in these pistols.
