I reload for sport with 185 gr. Precision Bullets, 5.7 gr WST, Winchester or Wolf primers. This shoots very softly, gets about 970 fps to make USPSA Major.
For my Hornady 155 gr. XTP, it's 6 gr. of 800X - don't go over 6 gr of 800X, you'll get flattened primers. Make sure to check each cartridge load for powder weight on a balance. 800X doesn't meter real well through my powder throw, so I weight each load individually to be sure that it's right. If you don't, you run the risk of a KABOOM! I'm not interested in being in a youTube video on how not to do it.
TRY THESE LOADS AT YOUR OWN RISK! I carefully walked up to them.