Here is a link for you
https://www.arboristsite.com/community/threads/guide-bar-comparison-tests-measurements-pictures.293794/
I have a 28” and 20” tsumra bar.
Run them on my 460 and 362.
The 20” has close to 80 cords of fire wood on it. And about 8-10 chains. Original tip
The 28” I use...