Looks like you had a great time.  Whenever I check this forum I get the urge to go back, but this economy has got me a little spooked.
I did some management work in Zimbabwe in 2000 - mostly Impala but also anything else that moved, since the land was going to be occupied and cleared for cattle.  
The experience almost drove me to buy a Merkel SR1, a nifty little semi-auto carbine available in a few carts including 308.  It fit me like a glove, but so did 2 grand, so I am still a bolt man.  The distances in Zim are nowhere near as long as it looks like you hunted.
Thanks for the post.