wife said yes

[BRS]

You do not need a $40,000 double gun to hunt DG there are many good used 375 H&H and 416 Rem Mags around a little looking will save you the $ over a new rifle for a trophy fee on something such as a warthog or impala.
CZ, Remington, Ruger, etc all make a 375H&H and a 416 Rem Mag that will not only lay low any buffalo or elephant but also work well on PG. I recently saw a Charles Daly (Mauser import) 375H&H on an auction site selling new for approx. $600. remington is now doing the import in their 798 with the same action.
Your 45-70 with proper bullets and excellent shot placement will also kill buffalo they aren't armoured cars. Many are killed each year with 7.62x39 for population control and poachers use snares,shotguns loaded with grit and nails,etc. The problem arises if legal to use it as it is the bottom end of the .45 cal in power.