Sorry for the confusion. That 300 should do real well. Have you tried them in your White Rifle at all? Although that .52 caliber... I know its started an itch with you to shoot something. That 300 grain should do real well then. I never knew about elk mudding up like that. I knew they rolled in the mud but then never even considered the fact that they'd be mud covered.
What is it about mud and animals? My old dog loved nothing more then to find some old stinky swamp mud and roll in it. He'd come back to the house just ripe. Thank goodness for a garden hose.