Oh Wow!
I just got home from a sage grouse hunt and ran across this thread...Very cool!!
Many years ago the O'Connor display was at our local sportsmans show and I was working with the fellows that had control of it. They asked me (a huge O'Connor fan) if I'd like to check out his .270....damned right I would!
It's certainly a beautiful rifle. It's length of pull is a bit long for me, but otherwise it felt absolutely superb in the hand. I could definitely hunt it. I was surprised to see how exotic the grip cap and the butt plate were. I imagined that Jack, was a bit more conservative than that.
Jack, and the 6.5 Creedmoor.... I think he would have seen it as a "better Bob (257)" and used it enthusiastically.