If I didn't know you, George, my feeling would really be hurt at your incessant poking. I apologize to all, for chipping in on something so far off topic, but after enough subjective poking even groundhogs retort. This issue will come up in another forum. You have my word. This isn't my first rodeo George.
You've been given very good advice from down under. They have been at E-Targets far longer and bigger than any in NA. Read between the print and you'll find some wisdom or as I put it "road rash".
We don't talk "PRICE". I'm sure you understand the GPS system and would agree precision of your dash GPS or your E-Target is totally contingent on data points or coordinates. Right? I'm asking.
If so then let's talk value... ALL other systems outside of HEXTA run 4 independent sensors per plane, to determine the Point of Impact.
So $800 = 4 sensors = 4 coordinates (at best, when all tell the truth). So, $800/4= $200 per coordinate. Is that fair? Yes! I'm glad you agree.
So if you take $200 per data point or coordinate X 56, (for the HEXTA Match Grade target) you get.... well a lot more than the value of our target. I'll bet your calculator melted.
To be clear for you all. Sensors are not light beams. They don't always hear in the same perpendicular plane. They are ALL subject to error on EVERY shot. The only unknown is how much error,
this time?
Do your self, and more important your clubs favor and download the document below. It will be educational and objective, I might add.
https://goballistic.us/download/2874/
But again this discussion is long overdue, and should not be on this thread. But you poked. BTW I'm heading your way immediately. I'd stop by and let you shoot our target full of holes with an invite. (if I'm close enough)
Additionally, there are comments on this thread about imputing bullet diameter being part of the equation determining score or precision. Let me clarify this.
This is all Smoke and Mirrors, or Slight of Hand if you will. Makes some of you feel really good in a false sense of security.
Let's walk through the logic.
Calculate .308 - .223. You get .085 That's the diameter. So you must divide that in half to get the radius. Now your down to .0425.
There is NOT a sensor in the E-Target world that can even
COME CLOSE to that kind of precision. But, if it feels good, do it. But again download the document from the link above. It will be enlightening. And there are many more on that web site.