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Thread: Large RDS on Rifle - Target Obscuration durng left-to-right transitions

  1. #1
    Site Supporter rdtompki's Avatar
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    Large RDS on Rifle - Target Obscuration durng left-to-right transitions

    I have two 9mm SBR used for home defense and competition. I have been running a Holosun 407C on the competition gun (Steel Challenge and USPSA), but recently tried and older Trijicon MRO. I like the larger field-of-view, but find even with the RDS at the end of the receiver rail I'm having difficulty acquiring targets transitioning left-to-right. This might be somewhat related to my lack of binocular vision (can't fuse left and right eyes). Is it worth moving the RDS further outboard or is this something to train through? Didn't notice this with the smaller Holosun. As an old guy this doesn't matter much save for the fact that my HD configuration includes a Holosun 510 which is, itself, fairly large.

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    Quote Originally Posted by rdtompki View Post
    I have two 9mm SBR used for home defense and competition. I have been running a Holosun 407C on the competition gun (Steel Challenge and USPSA), but recently tried and older Trijicon MRO. I like the larger field-of-view, but find even with the RDS at the end of the receiver rail I'm having difficulty acquiring targets transitioning left-to-right. This might be somewhat related to my lack of binocular vision (can't fuse left and right eyes). Is it worth moving the RDS further outboard or is this something to train through? Didn't notice this with the smaller Holosun. As an old guy this doesn't matter much save for the fact that my HD configuration includes a Holosun 510 which is, itself, fairly large.
    It might be worth trying to move the dot all the way back as well. Check where Lena Miculek is running the dot on her PCC, and nobody would say her transitions are slow.

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    As a limited binocular vision guy myself on larger transitions Iíll look out of the box of the dot to pick up the next target and then let my eye go back to the center of the dot while Iím swinging the gun to the target. My cheek weld doesnít change itís all eyeball within socket movement and I feel like Iím doing a crappy job explaining what I mean.
    "I don't know if it is a placebo effect or not, but I have a growing feeling of well being that comes directly from my instinctual survival drive deep in my belly centerĒ

  3. #3
    Site Supporter rdtompki's Avatar
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    Appreciate the input. I'm going to the range today and set up more of a controlled experiment: three equally-space targets at the same distance. I can time left-to-right and right-to-left with the optic in different positions and with my original RDS setup. This should give me a decent read on which way to go.

  4. #4
    Site Supporter rdtompki's Avatar
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    I'm going to stick with a small optic. Absent binocular vision I'm unable to fuse left and right eye imagery and the FOV (field of view) of the optic, itself, is too small to support quick target acquisition. I'm going to try the small optic close in which will decrease the obscuration present in my left eye FOV. I'll see how that goes. FWIW, I couldn't pass the Air Force basic pilot visual tests despite having my left eye operated on many, many years ago. Binoculars, same issue. I can fuse left and right eyes in the F-35 helmet mounted display (worked on the design team), but that's an outlier; it's a fabulous piece of gear.

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