I have ordered the M03 Africa in .375 H&H with the heavy African barrel.
Its also magnaported.
I upgraded the wood to high grade 5. I reckon Mauser have a funny (expensive) method of grading their timber. I also had the engraved bolt added.
I'm keen on a second barrel in 458 Lott and would also love a barrel in 257 Weatherby.
I have asked re the Weatherby barrel await a reply.