OK..."slow brain" confession. I finally put together the pattern on the inserts.
The first number simply denotes that there are 14 of them (1-14)
The second TWO numbers stamped on the insert are the FIRST two numbers of the caliber noted in their instructions (i.e. 6.5-284 Norma caliber would be denoted as "5-26" where the 26 implies a .264 caliber)
It would have been nice to have all three numbers, but I'm guessing a stamping issue came into play.
I guess figuring it out later is better than never
Good Afternoon Gents/Ladies,