@Talyn Hi-Lux emailed me that manual before I made it home today. Great when these companies are willing to absorb the cost of providing customer support! Hats off to Hi-Lux.
Funny I've become so used to manufacturers lack of support that I didn't even think to try. Glad you mentioned it, just reached out to them.
The mere fact that they listed a contact email is encouraging.
I got my hands on a pristine M1200 and mounted it on an PSA PA-10 (.308), and after doing a bit of searching (quite a bit...), the info I find online seems to be for the M1200 XLR.
My scope is apparently older. The diopter is larger than the newer scopes, and the thumbscrew on the C ring is...