Welcome to the forum 10 spot!
It is plain to see you bring a new wealth of information with you. There is alot here, but more is certainly better in this case. I too have a pre 64 70 in 264. Unfortunatly it is a feather weight, with a 22 inch tube. Really too short to make the most of this round. Oh the muzzle blast though!
In dim light it is really sight.
Someday if I find the right standard model I might just have to have another. Thank you sir for posting, and I look forward to seeing your future posts.
Best regards Kirk