Originally Posted by
RickinTN
16 grains of 2400 is a suggested load. 2400 is considerably slower than Unique. When I think of Unique in a similar cartridge I think 10 grains or so. I could be wrong, as I have been before, but 16 grains of Unique with a heavy for cartridge bullet in a 280 sounds like a hot load. You don't feel pressure as recoil so no surprise there. It may not be over pressure but I tend to lean that it probably is. The rubber mallet sounds like a good idea to me.
Good Luck, and let us know what you find,
Rick