260Remguy: I looked that auction up on a search and found it:

link: https://www.gunbroker.com/item/847710882

I thought picture #10 was especially cute there on that site - in that the folks at Ruger could NOT find it in their hearts to mark the barrel with the word "REMINGTON"!
The barrel is just marked 6MM!
He-he.
Kind of a cool caliber (I have owned lots of them including Ruger #1's, Ruger Model 77's, Remington 700's, Remington 40X's, Remington 788's and some customs).
Good for the folks at Grice getting some different stuff out onto the market.
Hold into the wind
VarmintGuy