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. Here,s my ? , Not that I plan on going to Africa . But why not list 4 carts. on the barrel , I don,t know if 458 American brass is available , So maybe onlt 3 carts. 458 Win ,458 Lott 450 Watts ..... Ream the chamber for the Watts and that way you never need to trim brass And anything H&H belted short of the 470 Ackley / Capstick will go Boom when the trigger is pulled ............
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. There is a real basis for this , with me anyway . One time I grabbed a 458 Win ,the wife and I jumped in the truck and off we went . We got out quite a ways from home and when I went to grab some extra ammo , I had lots of Lott but only a couple extra rounds of Win Mag ....Now you can do alot of work with 5 rounds of 458 Win Mag . But I still wanted more than what I had .... I,ve got a rifle mod in mind that I think will work ...
. Kindof a Homesteaders Bear rifle thing ...

Are the Watts and the 458 Express the same? I like this idea. One gun and any 458 ammo you can muster. Not many guns out there that you could do this with other than 458.

.. Ya and 416 Hoffman and Remington ,Most of the H&H belted 375s ect ..
Pretty quick way to make 458 Brass .

You may run the risk of having paperwork rejected when you have to put four names in one box, or worse. They just aren't gun-savy enough to get it. Likewise, your headstamp would need to be the same. Assuming anyone actually checks.