I secured three pounds of R905 which I want to use for some handloads. Data is rather scarce, however. Do any of you have data from older reloading manuals listing R905, especially for calibers such as 7mm RM or 280? I have found some data for the 7X64, which at least suggests some starting loads for the 280, but any direction you could provide would be greatly appreciated. I would wish to try 140, 150 and 160 grain bullets.
