We were in Unit 21.
We all shoot Rem 700's in 300RUM or 7mm Mag.
My brother's and mine have had substantial work done including barrels, stocks, clips added, triggers ect. by Alex Sitman at Master Class Stocks.
My fathers has an aftermarket stock and is one of the first stainless steel Remington 700's ever made, SN 10##.
I do not have any additional info on Don or Bob's rifles.