Looks line mine were built during the 1992 to 2006 period. Mine were acquired after '92 but before 2000. Most but a few have been sold off for lack of use and funding for other projects. Did at one time have all of the Supergrades, five I think.
Sweet rifles. You sure do like to rebarrel them though. May I ask why? Generally the model 70's shoot well. Even the featherweights. The rifle on the bottom must be a WSM. Nice collection..
Re the WSM, you are correct! It was built from a 308 I believe and was lots of trouble, new mag follower, modified ejector, open bolt face and then had to mill the receiver ejection opening back a bit after it was all completed as empties would not eject. In the end, it turned out to be a great shooter and very nice rifle.