From a newbie: I've just acquired a CVA Scout in .444 Marlin. Using loads for 240 grain and 310 grain cast bullets I've established loads for them. Usually I go to the range and "kill" paper. Looking on the internet I've found 240 gr. Unique 10.0 gr @ 1293 ft/s and 310 grain,10.0 Unique @ 1178 ft/s. Having never used Unique for a reduced load, do I need to put a filler in on top of the powder, and if so, what filler?