Yep, 8.0 to 8.5 grains of Unique in magnum brass will push a 240/250 gr. bullet to 900 to 950 fps. depending on barrel length and whether or not a jacketed or cast bullet is used. This is a very comfortable load to shoot. With the two powders you mentioned, standard large pistol primers are what you will want to use. I like to use magnum brass even for reduced loads so I don't have an extra powder ring in the chamber to clean out. Just my way of doing it.
If you decide you want a little more power, 10.0 grains of Unique is a good medium load with the same bullets. Use your 2400 for max to near max loads. Have fun..........
