Sectioning Bullets

I was piddling on my bench today and decided to section a bullet.  A common .30 caliber 150 grain Hornady SST, #30302.  This bullet is marked as an Interlock bullet and I wanted to see if I could find the Interlock.  Just about the time I finished sectioning the bullet, my son came into the shop and we looked at the bullet with a jeweler's loup.  He tells me that he can see the interlock, but my tired old eyes can't make it out, even at 10 power.

So, I decided to take out the camera and see if I could get a picture.

My camera skills ain't great.  I can plainly see where the cannelure ring locks the jacket to the core, but I can't make out that Interlock ring.

Maybe when I get some quiet time next week, I'll polish that surface and see if I can't get a real good picture.  These are great, excellent bullets and they fly nicely, but I'm darned if I can make out that ring.