Have two lefty Weatherby MkV rifles. One in 30-06 with a synthetic stock with the H prefix showing a production date of 1972-1994 and the other,an Ultralight model in 7 mm Rem Mag with the SB prefix, showing a production date of 1995-2002. I was wondering if these were common or rare production calibers back then for Weatherby. I haven't seen any left handed ones up for sale when I peruse the gun auctions.