Page 3 of 3 FirstFirst 123
Results 21 to 27 of 27

Thread: Serious Problem with DD Fixed Irons on BCM Rifle

  1. #21
    Join Date
    Oct 2012
    Posts
    4,224
    Feedback Score
    10 (92%)
    Wonder where he bought the sights? A lot of fakes out there. https://danieldefense.com/counterfeit-information

  2. #22
    Join Date
    Mar 2011
    Location
    Texas
    Posts
    14
    Feedback Score
    0
    Quote Originally Posted by AndyLate View Post
    1.5" low at 25 yards is basically a 100 yard zero on an AR because of the sight height over bore. A 25 yard zero requires a pretty steep trajectory and the POI would cross the POA again at 400 yards.

    All academic, I would be displeased if I had to bottom out the front sight to zero at 100 yards. Hopefully DD takes care of you.

    Andy
    This is my concern since there is nothing left if I need it. And yes, it’s the front sight.

    And to others no, I’m no expert and said I was new to this platform at the start, but I’m learning. I understand a little, and know there is offset as well, but something isn’t right here. Whatever the case, I’ll get it sorted. Thanks for your help all.

  3. #23
    Join Date
    Feb 2016
    Location
    North Alabama
    Posts
    2,331
    Feedback Score
    16 (100%)
    Quote Originally Posted by Patrick_B View Post
    This is my concern since there is nothing left if I need it. And yes, itís the front sight.
    I see you caught my error before I did.

    Andy

  4. #24
    Join Date
    Mar 2011
    Location
    Texas
    Posts
    14
    Feedback Score
    0
    Quote Originally Posted by AndyLate View Post
    I see you caught my error before I did.
    Andy

  5. #25
    Join Date
    Aug 2010
    Posts
    238
    Feedback Score
    9 (100%)
    Quote Originally Posted by Patrick_B View Post
    Not sure how that will work out if I’m this low at 25 with no adjustment left, but I’m willing to learn.



    That’s interesting, and I will look around. I’ve come across a couple of early featured M1 Carbines with sight blades too tall, and had to deal with that. A whole lot would have to come off this one, so I will look into that. Perhaps DD will shed some light on this for me as well.

    Thank you both...
    That low at 25 would probably still have you hitting high at 100 so I would would at 100 to check and it'll probably be good.

    My standard procedure for zeroing same plane rear irons for POI=POA at 100 yards is to shoot a 25 yard target and adjust so the bullet is roughly 2 inches low at 25 and that will put nearly dead on elevation at 100.
    Last edited by bb223; 10-27-20 at 00:00.

  6. #26
    Join Date
    Jan 2018
    Posts
    3,068
    Feedback Score
    0
    I bought a used "DD" front that wouldn't zero at 50yards(hitting high with the post barely threaded in) so assumed I got a fake even though it seemed to match pictures of some DD sights through the years.

    Go here and use 2.61" for the sight height.

    https://www.federalpremium.com/ballistics-calculator


    What you have seems to be on the ragged edge of being able to get either a 50 or 100 yard zero, but the maxed out part sounds like something is off.
    Last edited by jsbhike; 10-27-20 at 11:05.

  7. #27
    Join Date
    Jul 2016
    Posts
    898
    Feedback Score
    0
    Are you married to DD sights? When you found a problem, you did not contact DD, you contacted BCM and they were just fine with other sights. DD rear does not even adjust for distance. OK, it is cool, sleek, A1 windage, slides on, but these are for up close work only. There is a cut down A2 from LMC and an even cooler design marketed by Palmento. These can be adjusted for distance. Or you could move into the 21st Century with Ultradynes. What is the fascination for DD?

Page 3 of 3 FirstFirst 123

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •