Bartlein is one of those who say Stainless needs to be a certain minimum contour, This original factory barrel is a #2 sporter,
Bartlein says no SS unless #3 contour,
I'll verify, but that's my understanding.
Regarding lands and grooves, I personally have no clue......
The Gunsmith is their very own in house 'smith,
otherwise it would go to Lee.