Yes ,Dave, IT was a deep and swift river. I noted the gps coordinates in case I ever needed to try to find it if I ever give up my nonviolent “can’t we all get along” philosophy that I have developed over the years since I served in the 101st Airborne in Viet Nam many years ago. By the way, the load I used in this attempted zeroing in of the late weapon was the “dollar a shot” (at that time) red box Black HIlls 168 grain Match Ammo. I have heard you can get more accuracy in the Remington 700 by handloading the .308 slightly longer than commercial ammo requirements, something to do with the bullet engaging the rifling but I digress as I am now nonviolent and thinking of becoming a democrat.. : D
Get a true measurement of the throat of your rifle, back off .005 from that and start there.
Flip a PM if you have questions.
I have used one working up loads for a 45-70 ruger #1 it worked great