I had a question about the Bushido Lightening Strike.
Is it calculated the same way as OSI when a critical hit occurs?

OSI formula is like:

Bushido skill * Bushido Skill / 72,00020%

So if you are at 115 Bushido you have 18.37% of hitting critical damage,
and if you are 120 Bushido you have 20% chance.

Also is there a hard cap on Bushido, if I decide to jewel up to 130 Bushido to increase my crit chances for either PVM or PVP?

Thank you.