Mounted the RT6 in the Arken mount on a 556 AR from BCA. I had set a target at 25 yds for the initial sight in then moved back to 100yds and zeroed it. The glass is clear and bright. I was worried that the reticle would be too busy, but it turns out it is just fine. The hold over hash marks correspond well with both 55 and 69 grain bullets. I was easily able to hammer the steel plates out to 600yds.
What always happens when I find a good scope like this in the right price range is it gets discontinued. I think maybe I'll get a couple more of these and set them aside for future use.
I also zeroed an old m8 6x leupold on my 6.5 x55 mauser. The Glass in that scope isn't as good as the MUCH newer Burris but it is still quite serviceable. The heavy duplex reticle isn't conducive to shooting tiny groups , but it zeroed easily and it'll do an awesome job on everything from 10 to 300yds. That'll cover 99 percent of the shots I'll likely take with it.