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yes it is the right action to build a 300 win mag as it is the long action

Yes it is. The bolt face is cut for the 300 win mag case and the feed rails in the magazine well are cut for this case size also.

Christopher, yes, This is a remington model 700 long action Magnun. It is carbon steel with an externally adjustable X Mark Pro trigger and will work just fine on your 300 Win Mag build.

Hi Christopher, yes, This is a remington model 700 long action Magnun. It is carbon steel with an externally adjustable X Mark Pro trigger and will work just fine on your 300 Win Mag build.