A friend recently bought a 30-40 Krag rifle and was delighted to have found it. He was having trouble finding either ammo or brass for it so he passed this chore over to me (whatta pal)! My luck was no better than his so I searched my options in several cartridge conversion books I have on hand. To my surprise I learned that the .303 British cases are almost identical to Krag brass. I gathered together a few .303 samples and pressed them through a Krag sizing die. The end result was a very useable substitute and the end of a frustrating and potentially expensive search for properly branded brass. I took the time to ask him if he now owns a rifle chambered for the British cartridge. His answer was that he did not, nor will he add one to his assortment just to be on the safe side.