cumminscowboy wrote: "a properly designed duplex does the exact same thing."
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Sorry, but that's just not the case. I can assure you that on the type of targets I shoot (primarily dark-colored hogs under nothing but moonlight or in very poor daylight), you can't tell where a Leupold or Swaro duplex begins or ends -- and that is the case with many narrow/thin duplex-types. The Zeiss #20 and Nikoplex are exceptions and are heavier and can be made to work, but a good #4 (like what Zeiss once offered) is truly invaluable in getting the crosshairs aligned on the vitals. The Burris #3P4 is also a very good low-light reticle.
Clarify, are the posts heavier than a Burris standard Plex and do they extend closer to center than the Plex? I've tried to find a substension chart on the Burris website and had no luck.
I have an E1 3-9x40 with standard Plex (discontinued) I bought with the specific plan of having a Heavy Plex installed. Was told by Burris CS the Heavy Plex is discontinued, though they still show it as a special order option even now. Maybe the 3P#4 will be a good substitute.
http://www.burrisoptics.com/customer-service/ballistics-services
