Huntin NC - do yourself a favor. Once you exhaust your supply of those pellets get yourself some loose powder. Pyrodex RS is a good choice and if you want a cleaner burning powder get some Black MZ or Blackhorn 209.
And if you want to save some more money shooting buy your bullets and sabots separately. I've had excellent success with 300 gr .429" and .451" Hornady XTPs and Harvester CR sabots (green or black depending on the bullet diameter).
Another great bullet is the Barnes EZ bullet. A bit more costly and really more than necessary.