I haven't shot any of PR's Keith HPs, but I do shoot their Extreme HPs and QT rounds ...................... and both are absolutely superior bullets!

I get excellent accuracy and superb stopping power out of both. In either 300, 350/360, or 400gr versions (depending on my target) - they ARE my chosen hunting bullets.

If he gave you a powder recommendation to go with, - go with it...............Cecil is the WIZ on such things. If he didn't, try 90gr of 777 powder or 105gr or Pyro RS. That's what works with 360gr sabots in my Knight USAK.