Merely entertaining YOUR argument.....

So then, you measure across the lands?

That must make for some really good accuracy, and one heck of a good seal. Why even bother with rifling if that be the case?

I don't care what credit YOU give me but it don't take a genious to know the widest portion of a bore diameter is from groove to groove, not land to land......

Too funny.......

Oh I get it, in your vast knowitallitude you assume I'm talking about measuring across the actual grooveson the actual slug, which represent the lands in the bore, in negitive image....

No Einstien, I'm talking about measuring the high spots of the slug which represents the grooves in the bore.....said, "measure across the grooves", by me, earlier.

Still too funny.........