People who shoot only Black Powder loads use that term. Okay, reloading costs about 1/4 compared to factory loads. 38 special is the most cost effective way to shoot this game. Don't worry about super light loads at this stage. Get used to the game first and as you improve, you will then be able to go all out like the top shooters do. RNFP means round nose flat point, you want a flat point for safety of loading in our leverguns, where the nose of the bullet rides against the base of the next cartridge.