No African country has a 40 cal. minimum, never have, most are .375 including the old Kenya...some in RSA have no minimum and only two States in RSA require .375 or larger. Zimbabwe has a 9.3x62 minimum that was set aside for some PHs that used it at the time, but it requires you to use a handload with an energy limit, but nobodys checking, so call the 9.3x62 good in Zim....Tanzania has a .375 limit for DG but again nobodys checking...Botswana, Mozambique and Zambia supposedly have a .375 limit and once more whos checking...

Basically in the bush you can use what you want for the most part BUT should you wound an animal and that animal kills or maims a native, your likely to be in a bit of s--t if your rifle does not meet the minimum requirement.....