A member asked me for advice on selecting a double rifle and chambering, and of mounting a reflex sight. My answer turned into a summation of information that I and many AH members previously provided. Below is a de-personalized version on the information.
This is the correct Hennenberger mount for a standard Trijicon RMR pattern including the RMR Type 2 and SRO.
https://www.optics-trade.eu/ca/henneberger-hms-trijicon-rmr-mount-for-uni-6-10-mm-rail.html
I ordered mine from the above linked vendor and received the mount in about three weeks.
This is an article I wrote concerning reflex (RMR style) sights for dangerous game rifles. Please read the entire thread twice. It received 7-pages with a total of 124 posts. Many others contributed their excellent mounting solutions!
https://www.africahunting.com/threads/red-dot-rmr-sights-for-dangerous-game-rifles.73440/
This is a photo from my article of a Hennenberger mount on
@Kevin Peacocke 's Heym 89,
Notice this mount keeps the RMR low and naturally aligned to the shooter’s eye when using a rifle stocked for iron sights!
This is a thread from 2019 that someone awoke with comments,
https://www.africahunting.com/threads/micro-red-dot-sight-options-for-double-rifles.53610/
Here is my post in it from the above thread,
https://www.africahunting.com/threa...-options-for-double-rifles.53610/post-1443119
My Hennenberger and SRO on my Trusty Heym 88B chambered for .458 Win
My previously mounted RM57 mount on same rifle. Notice the difference in height.
This is the Hennenberger mount with the slot milled wider for my rifle. My gunsmith also opened up the holes for the wider and stronger 6-40 size screws. I posted this in,
https://www.africahunting.com/threads/red-dot-on-a-merkal-double.95003/post-1474530
In the above post I showed an Aimpoint H1 on a Hennenberger mount for the Aimpoints on my Heym 88B.
The Aimpoints are larger than Trijicons but…
- Aimpoint “dots” do not flare as much with my astigmatism as the dot of Trijicon sights.
- Aimpoint sights “track” when moving to change point of impact (POI). If Aimpoint states one-click is one-MOA, it is. Trijicon, not so much… I shoot with Aimpoints in NRA precision (bullseye) pistol. I would NEVER consider using a Trijicon for Precision Pistol competition!
Everyone wants a double rifle but beware, don’t buy a entry-level double of questionable quality. It may function as design or it may not. For less than $10,000 retail cost, the thread below is my "Been there, done that" advice concerning Dreaming of a Double Rifle,
https://www.africahunting.com/threads/dreaming-of-a-double-rifle.91624/