Mick, I sure hope that my 450/400 3.25" EJ Churchill shoots as well as your AlexanderHenry 450/400 3.25" Double Rifle. Could you share details on your handload specs. My Churchill is marked on the barrel flats as follows: Cordite53GR Ball400GR MAX. Is this close to the AlexHenry marks? Do you handload close to the engravings on your rifle? Best Regards, Wes.