Posted: 6/6/2024 12:38:56 PM EDT
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I asked PA chat what the measurements of the ACSS Gemini reticle were in MOA or MRAD but was told if it wasn't in the manual it was "proprietary information" and they can't share "intellectual property". Seems like a reasonable question if you're trying to use it on a shotgun or other non-9mm platform. And of course it can be easily measured by putting a ruler downrange at a known distance. So... anybody know what the horseshoe inner/outer diameter is, and the drop of the lower aiming points from the tip of the chevron? |
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to answer my own question - everything needed to calculate the MRAD for the various reticle features is in the Gemini reticle manual. I don't think I got a copy with my scope but I did discover it on the PA web site. the mrad or moa numbers aren't there but with a little math you can figure it out. The key to the puzzle is the range finder on the bottom. the 36" distance at 100 yds was 207 pixels, meaning that 20.7 pixels equates to 1 mrad. I then measured the other features in pixels and converted to mrad. tip of chevron to crotch of chevron: 0.75 mrad tip of chevron to base of chevron: 1.35 mrad tip of chevron to upper dot: 2.6 mrad tip of chevron to lower dot: 4.8 mrad tip of chevron to largest, upper range line: 10 mrad. ~300 yd shot with a 16" barrel 9mm tip of chevron to lowest, smallest range line: 20 mrad for the vertical range finder (36" target) base to first line/200 yds = 5 mrad base to 2nd line/150 yds = 6.7 mrad base to 3rd line/100 yds = 10 mrad the distance between the top/3rd line and the 2nd line is 3.3 mrad/300 yds to a 36" target the distance between the 1st and 2nd line is 1.7 mrad for 600 yds. good luck shooting your 9mm at 600 yds  The base is 1.7 mrad wide, which would range an 18" horizontal target at 300 yds. I could have made a mistake here and there, probably with mismeasuring the reticle graphic. an ms paint of all this would help a lot. The PA rep should have pointed me to the gemini manual (which again didn't seem to come with my scope, I think I ordered a demo unit or something) |
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Originally Posted By PovertyPonies: to answer my own question - everything needed to calculate the MRAD for the various reticle features is in the Gemini reticle manual. I don't think I got a copy with my scope but I did discover it on the PA web site. the mrad or moa numbers aren't there but with a little math you can figure it out. The key to the puzzle is the range finder on the bottom. the 36" distance at 100 yds was 207 pixels, meaning that 20.7 pixels equates to 1 mrad. I then measured the other features in pixels and converted to mrad. tip of chevron to crotch of chevron: 0.75 mrad tip of chevron to base of chevron: 1.35 mrad tip of chevron to upper dot: 2.6 mrad tip of chevron to lower dot: 4.8 mrad tip of chevron to largest, upper range line: 10 mrad. ~300 yd shot with a 16" barrel 9mm tip of chevron to lowest, smallest range line: 20 mrad for the vertical range finder (36" target) base to first line/200 yds = 5 mrad base to 2nd line/150 yds = 6.7 mrad base to 3rd line/100 yds = 10 mrad the distance between the top/3rd line and the 2nd line is 3.3 mrad/300 yds to a 36" target the distance between the 1st and 2nd line is 1.7 mrad for 600 yds. good luck shooting your 9mm at 600 yds The base is 1.7 mrad wide, which would range an 18" horizontal target at 300 yds. I could have made a mistake here and there, probably with mismeasuring the reticle graphic. an ms paint of all this would help a lot. The PA rep should have pointed me to the gemini manual (which again didn't seem to come with my scope, I think I ordered a demo unit or something) I apologize for not answering this sooner, and I'm not sure what rep you spoke to, but yes the measurements for the 9MM BDC is in the product manual. If you still need help I'd be happy to find the answers for you! |
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Originally Posted By PrimaryArms: I apologize for not answering this sooner, and I'm not sure what rep you spoke to, but yes the measurements for the 9MM BDC is in the product manual. If you still need help I'd be happy to find the answers for you! No worries, it was just a little miscommunication. I noticed mrad and MOA measurements are included in other reticle manuals, like for the 3-18x50 scope. For example:  but all we get in the Gemini manual is  I think my derivation/measurements were correct, so I have what I need now. I am planning a shooting trip to put some distances for 1oz slugs on each of the reticle features. Just what I always wanted, to turn my shotgun into a sorry excuse for a sniper rifle |