And after seeing the DF tests, I'm inclined to think SR77 may be tougher than INFI.
Thoughts?
"Tougher" is a pretty subjective adjective, Rich. Define what you mean by "tougher".
Toughness is defined as ability to take impacts against hard substances without suffering from chipping or fracturing. E.g., the extent that the steel will roll/deform rather than break.
