I have a Cooper Backcountry in 7mag that I don’t use and bought reasonable.
PM me if interested
SS metal (no Cerakote) black stock with silver webbing.. 5-13 oz with bases.
I would guess (all we can do) its headspace as even tight chambers have plenty space for neck length...
If it’s OAL you will easily see the lands engraving on the bullets
I just picked up the 42mm in the other mil reticle but only because I wanted the lightest version. I have several of the previous version with the G4....
For a pure hunting rifle out to 500-600 yds I prefer the G4. Put the dot where you want the bullet to land... If further the reticle provides decent holdovers.