The 375 Forsberg was developed during the latter part of 1983 by Pacific International Service Company gunsmith Lee Forsberg, out of Janesville CA. It was based on the .308 Win case cut down to 1.563 inches and was part of several necked up or down variations on the 1.5” version of the .308 Winchester, with this being about the upper limit and still retain some form of shoulder. The Forsberg was designed to be used in the Remington XP-100 silhouette pistol. See also Cartridges of the World, 5th Edition by Frank C. Barnes. BDI Books, ISBN 0-910676-95-X.
