Have used the Ramshot: TAC, Hunter, Big Game and Magnum powders. No complaints about any of them and use at least one of them on a very regular basis for either .223, 6mm Remington, 25-06, 257R, 6.5x55, 6.5x257R, 7x57, 7mm-08, .308, 30-06. Really like the way Ramshot powder meters and think it burns pretty clean.
Loaded some 6.5x257R ammo using Hunter just yesterday.