Carl,
I didn't understand the rifle still had a shootable barrel. I absolutely would recommend handloading and shooting it in the original caliber now. Original Rook rifles are harder and harder to find. Common 38 Special cases can be shortened to fit and proper bullet molds as well as loading dies for 38 Long Colt are available. At the worst, you might have to size the heeled bullet from .380"+ to .360"+. Somewhere in these forums our old friend Wayne Goree described in pretty good detail his experiences handloading for both .380 and .360 Rook rifles, including bullet diameters.
Mike

Last edited by Der Ami; 02/10/24 03:06 PM.