So I haven’t seen a thread on this yet so I figured I would put it out there. Looks like the first two are chambered in .300 Win Mag and .338 Lapua.
.300 WM
https://ruger.com/products/precisionRifle/specSheets/18081.html
.338
https://ruger.com/products/precisionRifle/specSheets/18080.html
.300 WM
https://ruger.com/products/precisionRifle/specSheets/18081.html
.338
https://ruger.com/products/precisionRifle/specSheets/18080.html