A jagged tip, called a cleaning jag, is the proper tool for wiping the bore. Use a wet or oily patch. Never use a dry patch. It may become stuck. Made of brass, with strong steel threads in 8-32.
Same day shipment, when you click ADD TO CART and complete shopping cart check out. Inspect the item, return it for same day refund if not delighted. You will be pleased with your choice. You pay postage, your only risk.