Cheese - Norma used to have a great load for that round and Norma powders are available. I used Norma for both the 7.5x55 and the 303 Brit with great success. Vitha-Vhoury Oy powders carry equivalent loads for the 303 Brit and are an excellent resource for reloading european cartridges. You may wish to try them, too. Mikey.