If I was going to supply a young, aspiring Zimbabwe Professional Hunter with a new rifle. It would be a CZ 550 standard grade. Calibre would either be .375 H&H or .458 Win Mag. I would then have a LOCAl gunsmith disassemble and smooth the action and all internal parts. No other changes should be necessary (although many of the appys are fairly short and length of pull might need to be changed. Why the CZ550? The price is right and it is a very rugged rifle, the way that they are treated they need to be tough! Why .375 and .458 besides both be practical calibers, the big + is clients may give them left over ammo!