Yes, the right TSS load would be a great stopper. But Drthk's question is not easy to answer. I had promised to publish my testing on stopper loads, but life got in the way. Some of the complexities: A Controlled Trial is not possible. We can't get 1000 leopards or bears to charge and standardize their weight, hair length, aspect, velocity and determination and then divide them into groups to test loads for effectiveness. We have to make some in vitro assumptions. Quantitating the data is also difficult: e.g.: this load was a bit better than THAT load or this load was 82% as good as THAT load.....definitions and parameters must be chosen ahead of time. Having said all that, and driveling on too much, I will skip to the conclusion. In my testing, if the best stopper load was rated at 100......the next best load rated 43. The scale was linear. And the 100 rating was TSS. #T for animals bigger than 150 kg, and #2 for animals less than 150 kg. I still hope to list my testing method.....because it was a fun project. But right now, I must plan a trip to Africa. Where I won't have to stop a charging leopard, and freely admit I have never done so.....I will leave it to some trusting PH to do the beta testing......good shooting .......FWB