Finally got to test the RL25 as a clip on in front of a scope per a post by
EchoFiveIndia (
https://www.snipershide.com/shooting/goto/post?id=10509477) that indicated a friend used it as such despite IRAY indicating it was not possible.
I stuck it on a Ruger M&P 15-22 in front of a Nikon P-22 rimfire scope and it held zero at 50 yards. As my earlier posts indicate, I've been extremely frustrated with the RL25 as a weapon sight. It simply would not hold zero with the built-in reticle.
My findings....
The good: I was able to zoom the unit fully and adjust my scope to get the unit to hold zero. I peppered a "hot hands" target out at 50 yards so I was very happy. I took the unit off, put it back on, and it held the same zero. I took the batteries out, waited an hour, and put them back in and it held zero. I had another shooter do the same thing and the RL25 with a different scope on a different rifle held zero as a clip-on. This confirms to me that the initial problem was not with the mounts or the rifles or the shooters but with the internal IRAY reticle software. I hope they have a future fix.
I found the target with everything at base mag, then hit the RL25 zoom button twice, fired, and hit the target. It works!!! Takes time but I got quicker with it as I practiced with the workaround.
The bad: It required a lot of Nikon scope adjustment. Hit the limits of the scope's elevation and had to use the max zoom which pixelated things badly.
Adjusting zoom changes POI
If you adjust the focus the POI changes too so I had to just focus on one distance and get that solid first and not move it. That stinks but usable.
The zero of the Nikon scope with the thermal removed is way off. I can live with it as I planned to use the Ruger to shoot at night anyway.
Everything is not zeroed at base magnification or the first zoom click but I probably could have tried to zoom the Nikon reticle at either of those points with ring adjustments and more work.
I cannot see the menus at the bottom so have to go by button memory. I just left it at the defaults. I can see the shutdown image when I long press the shutdown button so that is good
Field of view is really bad at that zoomed level so better hit your target on the first shot if it moves.
I ran out of time but walked away with mixed feelings. Relieved I can use it but frustrated that it is a makeshift work-around. I would have gone with a dedicated scope if I knew the RL25 wouldn't hold zero as a weapon sight alone. I will test it more in the weeks ahead.
I am also frustrated that nobody from Iray has responded to my repeated requests for help. I emailed the person who initially was very responsive and helped with the first return and received no response. I asked for help with a software fix or any suggestions and got ghosted. I also filled out the contact us form and Iray never responded. So I give IRAY USA an A+ for customer service on the first return and then very poor customer service on the second inquiry despite including all the initial RMA information and multiple attempts to contact them.
I know it isn't designed to be a clip-on but I was desperate for a solution because I purchased it to be a lightweight weapon sight. Many thanks to EchoFiveIndia for passing on that info!!!