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.