22 CF Trainer

Lots of discussion at the Club last evening about 22CF on the SMLE trainer. One chap claimed the Navy had loads of 230 Morris and some 22 trainers were chambered to this calibre. I've looked through Skennerton and see reference to liners and the abundance of 230 Morris in the Navy's hands.No reference to a rifle conversion however nothing surprise me in the Enfield world. Also see reference on the Rifleman.Org site of a 22 CF cartridge by Parker Hale. Chap claims to have handled and shot such a rifle. Any comments? Ron