Hello Ric
The Oehler program has the Sierra MK 168Gr 30 cal at .475 BC
I base most of the bullets on the Oehler program as they seem to work the best in actual fire tests.
An example of a good group at 100 meters.
I once shot a group from a Remington 760 Pump 3006 that was a 5 shot one hole that I could not believe. It was tighter then the first pic you posted if you throw out the flyer you had.
Most of those rifles would not shoot real small groups but, this one did for some reason. I used 168 grs in that to.
Would it shoot at 1000 yards---NO way, I don't care what bullet was in it.
I carried that group in my wallet for years before the paper finally went.
Anyway, I think you have a heck of a good hunting rifle and want to hear about the kills it makes over the years.
Have fun with it and bring it to Williamsport with you.
You'll probably beat Boyd with it "If" the wind is blowing.
----He's easy in the wind and he will be the first to tell you that
Later
DC