Well, now...
I'm one of those hunters who is constantly experimenting with new projectiles. When I find that a grain works great, I don't use it anymore. I just record all the results in my journal and move on. I have great confidence in the 243. When the powder and grain are well combined, it becomes a very powerful weapon. Taking into account that the leopard cat weighs 70 kg, and is extremely strong and muscular, but with a thin skin, I believe that the stopping power of the projectile is very important. If we take a situation where a leopard is in a tree and is eating bait, I would rather shoot it with a bullets that will transfer maximum energy to its body, even at the cost of not leaving the body. The SST in 243win is an extremely destructive bullet
that will turn your internal organs into soup. Even better if the animal's shoulder is also hit, in that case I think the leopard will be dead before it even falls from the tree. I note that this is my opinion, which is based on certain experience with other animals, not on the leopard. I haven't shot a leopard yet, but I hope I will have the opportunity. In the event that one of you who has hunted this animal tells me that I am wrong, I will unconditionally change my opinion because I am not stubborn and I like to listen and learn something from people who have tried something more than me.