280 no I don't have any loading data for TAC and the 168 gr. all my sources show 168 run with Big Game and the other powders everyone else is using. A few years back I bought 4 boxes of 168 gr SMK for $5 a box that had been moly'ed off a bargain table. I need to keep them as accurate as possible at 2650 to match an M3 dial on a Leupold Mk 4 LRT so I came to this thread where many people had allready covered a lot of ground. Magnum Man