I have a Monarch on my 270WSM. To my eyes it is outstanding glass. I’ve set with it on a night time pig hunt and been able to make out pigs at around 100 yards from just moon and starlight.
Mine has the BDC reticle. I know some are not a fan of the Nikon circles, but I’ve been able to make accurate shots out to around 350 yards with it. I could probably push that farther but just haven’t tried with that particular set up before. The Swaro is great too though, good decision to have to make!