You're going to be pushing that bullet at 700-750 fps. if you are keeping it at book pressures. Leading isn't going to be an issue unless you have a rough bore or screwy forcing cone. Max. pressure for the long is 12,000 CUP.....pure whimp.
The boosters for Unique state that it cleans up if you drive it at higher pressures. At these low pressures even the new and improved cleaner formula is going to be pretty dirty. If your choice is Bullseye or Unique, I would go Bullseye. You'll use 2/3 as much powder and it usually works better at these low pressures. A pound will last you a very very long time loading this cartridge.
Last edited by SHR970; June 17, 2012 at 08:43 AM.