I have been using Grand in a 300 PRC using 300 Win Mag as my reference because they are really close in case size ect. Using Hornady and Hogdon data also. I really like the powder as it burns clean and really throws consistent weight. Im finding my Christesen action to be a little tight and I reach Pressure indications on the brass a couple grains earlier than recommended max. So far im really liking the powder especially for that price compared to H1000 and others similar in burn rate.