Here you go: https://www.speer.com/reloading/rifle-data.htmlThe Alliant site does not show it for the 300 WSM but does for the 270 WSM which would get you in the ball park. It works well in the 270 WSM so should in the 300 too.
"When you disarm the people, you commence to offend them and show that you distrust them either through cowardice or lack of confidence, and both of these opinions generate hatred." Niccolo Machiavelli
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