I bought my first Vintage Double at a pawn shop. It was a Remington 1889 Grade 2 Hammer Gun with Twist barrels. About the same shape as your Daly, without the hammer issue. The bores looked about the same. Here's what I did, which is what I do with any double with rough looking bores.

Buy a wood dowel or metal rod that will fit into a power drill. Cut a slit about two inches down one end. Buy two Scotchbrite pads, one green, one maroon. Start with the green, cut a strip to a little less than 2", center it into the rod slit. Saturate with light oil, wrap it spirally around rod so it fits snugly into the breech. At slow speed, work up and down bore, making sure it doesn't come completely out of muzzle. After three or so passes, remove and run a few patches down bore. Repeat with maroon pad. Repeat with bronze bore brush wrapped with 000 steel wool. Repeat with 0000 steel wool. Use oil with each step. Clean bore and inspect. Now you can really determine how bad the pits are, my 1889 tubes looked totally different, and it's been my pheasant gun ever since.

Last edited by Ken61; 12/25/16 10:25 AM.
I prefer wood to plastic, leather to nylon, waxed cotton to Gore-Tex, and split bamboo to graphite.