Wildcat Bullets will be making them when the dies get in. I believe Richard will be making them in the 425 gr range and I think there will be an even heavier version as well.
These will be match quality, Lead Core 408 bullets which should perform much more consistantly over a wide variaty of barrels compared to the solid bullets which will shoot well in certain spec barrels but very poorly in anything but that bore diameter.
Drop Richard a line at email@example.com
and see when he expects them to be ready to roll.
I think a 450 gr ULD RBBT would be about the ultimate in this caliber for extreme range shooting.