What the others have said. Please do not alter the rifle. About the only cartridge that would even come close to working would be the .222 or 223 rem. The .222 is nearly obsolete, and it is going to be hard to find a factory loading in .223 that will have a bullet that will stabilize in the slow twist of the 1922 barrel. Not to mention the .222 and .223 will have .224 bullets and you have a .223 bore. Also, the action was just not designed for the pressure and bolt thrust that either will produce.
G&H and others made many .22 Hornets on the 1922 which shoot fine with today's Hornet ammo. My suggestion would be to pass over the 22-3000 and find one in .22 Hornet and enjoy it. Let someone who enjoys loading for the old cartridges have the Lovell.
John
