Tip hardness by brand is posted in Meuller's catalogue in their tip section (for what they carry). The catalogue is available on line, but I never checked to see if their tip hardness values are posted there.
When shopping for a different tip, I look at what I have shot with as a "known" and adjust hardness values up or down depending on what I want in the new brand.
The hardness values should be average per batch, but it is a great place to start.
I believe the Durometer / Shore D hardness scale is what is used for leather.
The triangle hard is 81.4
Old Chandivert Champion i found was 74.2.
I don't have a value for the Chandivert Rocky, but it was supposed to be the hardest available a good while back. Medium hard range is typically around 76.5 to 78 or so in the catalogue.
There are several hard leather tips in their catalogue at 82 or higher.
There are also some videos on Chandivert BB hardness ratings Out there...I thought that the surfaces of the test specimens were supposed to be flat, and that isn't the case seen on one video.
I would try to use Meullers data as that is likely done on the same equipment or taken directly from the manufacturer's data per an industry standard.
F.W.i.W...I am with the other guys, keep the tip you made it to the dance with...
Best of luck in Vegas.
Sent from my SAMSUNG-SM-G850A