Hi Hoppdoc,

If this is of any interest, I have a Lynx RDC Red Dot on my Brno 460WBY MAg( it used to be 458)
I shoot a lot with it and it works perfectly. I am satisfied with my groupings on 100m and that is more than enough distance for me.
The Brno is a very light rifle so it kicks like a giraffe and still the RDC holds.

Hope it can give you some guidance!!