Zimbabwe only just exceeds South Africa for the most top 100 Gold standard record book Leopard.
However, it is important to interpret the data correctly, statistically, Zimbabwe harvests more than double the number of leopards than ZA thereby sliding the scale in that destination's favor.
Botswana, Namibia, and Zambia all feature, but Tanzania exceeds the entries of those 3 countries combined.
Of late, Mozambique has been adding some impressive skulls to the list, however not yet grabbing major accolades. That said, the 16" SCI-measured skull is quite common with numerous topping 17"each year.
Bear in mind that there are many factors to determining the best leopard destination for each individual hunter aside from record trophy size, like other game species in the area, success rate, and Guide hunter competency.
For instance, Namibia has less than a 30% success rate per annum on leopard hunts, while Niassa in Mozambique boats higher than 70%.
The Southern regions of Zimbabwe typically produce larger cats than the Zambezi valley, yet hunting the expansive wilds of Northern Zimbabwe is a classic Safari generally not comparable with the mixed cattle/game ranching regions of the Southern lands.
Northern regions of South Africa present a genuine opportunity at a massive cat, however, permit availability and restricted land size currently pose significant challenges.
Method also counts. A study done by Mark Butcher in Zimbabwe over several seasons revealed that Leopard hunted over hounds averaged 1" larger than those hunted over bait during the same period. However, a broader data set is required to reach conclusive results.
So if your only requirement is chasing a brute of a cat, throw the dice to land somewhere near the Limpopo river...