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Son--
I've had very good results with 58.0 gr. of IMR 4350, with both the 168 match King and 165 Game King bullets. It yields about 2700 in my Riger 77R with 22 inch bbl, though manuals show somewhat higher.
The Sierra Rifle Reloading Manual, 4th Edition shows COL for both bullets at 3.340 but this is too long for my rifle, and for my son's 1903 Springfield Sporter. 3.295 is about as long as I care to go.
ALSO--While the above powder charge is shown in two different Speer manuals, it is a bit above max in Sierra and Hornady books.
Sierra shows accuracy load with the Match King as 45.9 gr or IMR 4064, for 2600 fps. On previous page, they show the accuracy load for the 165 GameKing at 47.9 gr of 4064, for 2700 fps.
Why? I don't know. That's what it says.
Best of luck to you. Please let me know how it works for you, in what kind of rifle, etc.
Johnny
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