Wow. Those are great comparison pictures of the barrels. Really shows the true difference in thickness. The 10mm thing was a curiosity mainly.
I don't have a pic of the other side. I'll go pick it up Monday & snap some.
I'm just happy to have another 3rd gen Smith in .40 for a great deal. My other is a 410 that I've completely torn down, polished & replaced the springs. I also added the Hogue grips which are fantastic.