It's got to be etched because some of the windage dots "float in mid air" eg. no wire to connect them to anything else .
I have one and it works quite well once you find the optimum power setting for your load . Drop chart required .
Get Exbal Ballistic Calculator when u purchase your ballistic reticle, and it'll zero all those stadia lines for u, even calculate a different magnification for a better reticle/trajectory "fit" if u so desire, and many other things. Here's a link to it-- www.perry-systems.com