Here is a Bellagio strike, .999 on the silver:

Here is a Buffalo Bill's strike, .999 on the silver:

Here is a Circus Circus strike, .999 on the silver:

The Bellagio is basically .6, and the Buffalo Bills and Circus Circus, at .585 are way closer to .60 than to .50 (that's probably where the "approximately .60" that most people use came from).

I have had .999 on the silver centers that weighed in at .608 and .61 too (again, that's where the approximately .60 comes from I would guess).

Dave.
SS-1232