l'm sure you will take a rifle big enough for the task.
I read a book a while ago which featured a 2 bore, this is an extract;
Sir Samuel White Baker, a notable
British explorer and hunter of the
Victorian era, was impressed by its power, but heavily disapproved of the recoil. He narrates dashing adventures with his two-bore rifle, which he affectionately referred to as "Baby" :“Among other weapons, I had an extraordinary rifle that carried a half-pound percussion shell; this instrument of torture to the hunter was not sufficiently heavy for the weight of the projectile: it only weighted twenty pounds, thus with a charge of ten drachms [270 grains] of powder and a HALF-POUND shell, the recoil was so terrific, that I spun around like a weathercock in a hurricane. I really dreaded my own rifle, although I have been accustomed to heavy charges of powder and severe recoils for some years. None of my men could fire it, and it was looked upon as a species of awe, and it was name "Jenna-El-Mootfah" (Child of a Cannon) by the Arabs, which being a far too long of a name for practice, I christened it the "Baby", and the scream of this "Baby" loaded with a half-pound shell was always fatal. It was too severe, and I seldom fired it, but it is a curious fact that I never shot a fire with that rifle without bagging. The entire practice, during several years, was confined to about twenty shots. I was afraid to use it, but now and then as it was absolutely necessary, it was cleaned after months of staying loaded. On such occasions my men had the gratification of firing it, and the explosion was always accompanied by two men falling on their backs (one having propped up the shooter) and the "Baby" flying some yards behind them. This rifle was made by
Holland & Holland, of Bond Street, and I could highly recommend it for the Goliath of Gath, but not for the men of A.D. 1866.
[1]
Ouch!
ft
PS; I talked to George Wallace (BASC and now NGO Firearms Boffin) a few years ago and he recommended a Rigby .416 as the best all round calibre for Africa, nothing I have read or heard since would disprove his belief.
”
Edit; I have just seen that there is "The History Of The Safari" on BBC4 tonight at 9.00pm
That's one of the finest men ever to pull on and England and lions shirts, Fran Cotton!!!!!!!!!! One of my hero's 
