I personally find Boyds business ethics deplorable and avoid them at all costs (they screw up an order and charge you for it)
As far as opening up a stock for a heavier barrel, should be no problem with sandpaper wrapped around a round object such as a large dowel close to the desired barrel size and a dose of elbow grease, followed by a wood sealer.
If most of your shooting is off of bags you might consider a stock with a wide fore end similar to a benchrest type stock for better stability.
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