Mine is the plain 338-06,but at least this might give you some reference on where to start and go up from there.My rifle also shoots 200gr Silver Ballistic Tips and Accubonds the same point of impact.I've only shot 200gr Nosler Silver Ballistic Tips,180gr and 200gr Accubonds and 210gr Nosler Partitions.They run around 2800fps and it shoots about as flat as a 30-06 with 165gr bullets.The 225gr would probably be a good bullet too,but it would be a little slower and would be about like a 200gr in the 30-06.As for powders,just about everything between Varget to 4350.I use a WLRM Primer in mine.I really don't see much difference between the WLR and the WLRM primers,so I quit buying standard primers and just shoot the magnum primers in my 308 Win,30-06,338-06,7mag and 300 mag.Some of the powders I shoot are ball powder and they recommend a magnum primer.
Here are some of my loads:
180gr Accubond 58.0grs Varget 3010fps
180gr Accubond 60.0grs Big Game 2940fps
200gr Accubond 60.0grs 760
200gr Accubond 62.0grs H4350 2740fps
200gr Accubond 63.0grs Hunter 2730fps
200gr Accubond 59.5grs BLC-2 2830fps
200gr Accubond 56.0grs Varget 2849fps
210gr Partition 54.0grs Varget 2721fps
200gr Accubond 59.0grs CFE223 2807fps
200gr Accubond 59.0grs Big Game 2812fps
200gr Accubond 61.0grs Accurate 4350 2661fps
210gr Partition 59.0grs Accurate 4350 2777fps

Last edited by baldhunter; 05/04/21.
~Molɔ̀ːn Labé Skýla~
As Bob Hagel would say"You should not use a rifle that will kill an animal when everything goes right; you should use one that will do the job when everything goes wrong."Good words of wisdom...............