Newbie here...Weatherby 300 mag. What Powder would be best to try?

[lunatic209]

No personal experience but few guys I hunt with all share the same load in their 300 weatherby's and all shoot exceptional with imr7828

 

[Bullwhacker]

7828 up to 180 gr bullets and H1000 or Retumbo for the 200 gr and up is what I've had luck with.