Calguns.net  

Home My iTrader Join the NRA Donate to CGSSA Sponsors CGN Google Search
CA Semiauto Ban(AW)ID Flowchart CA Handgun Ban ID Flowchart CA Shotgun Ban ID Flowchart
Go Back   Calguns.net > FIREARMS DISCUSSIONS > Optics, Mounts, Rails and Sights
Register FAQ Members List Calendar Mark Forums Read

Optics, Mounts, Rails and Sights If it aims your firearm, post about it here.

Reply
 
Thread Tools Display Modes
  #1  
Old 07-08-2018, 7:13 PM
melonpan melonpan is offline
Junior Member
 
Join Date: Jul 2015
Posts: 12
iTrader: 0 / 0%
Default Trijicon RMR Normal Parallax?

I just got a Trijicon RMR and noticed that the dot aim point shifted by as much as 3-4 inches when used at a target about 7 yards away. Note this is static testing and just moving my head around to see where the dot is pointing depending on where I place it in the window (e.g., dead center, right side of window, top of window, etc). Is this normal? I have Aimpoints and Eotechs and was expecting a similar parallax. Can anyone help me understand if 3-4 inches is within normal parameters or if I got a defective model...or worse case a counterfeit. Thanks in advance
Reply With Quote
  #2  
Old 07-11-2018, 7:58 PM
melonpan melonpan is offline
Junior Member
 
Join Date: Jul 2015
Posts: 12
iTrader: 0 / 0%
Default

Anyone have insight into this? Getting close to my return period expiring.
Reply With Quote
  #3  
Old 07-11-2018, 10:24 PM
Brush Guard Brush Guard is offline
Senior Member
 
Join Date: Jan 2015
Posts: 544
iTrader: 0 / 0%
Default

I don’t have an answer, but see how it shoots.

Experiment at the range and see how it effects the groups.

Please share the results.
Reply With Quote
  #4  
Old 07-12-2018, 6:38 AM
Paperchasin's Avatar
Paperchasin Paperchasin is offline
YOU are next!!
CGN Contributor - Lifetime
 
Join Date: Oct 2010
Location: SoCal
Posts: 5,313
iTrader: 317 / 100%
Default

I believe it states in the manual that the sight is free from parallax to 50 meters
Reply With Quote
  #5  
Old 07-12-2018, 6:50 AM
OpticsPlanet's Avatar
OpticsPlanet OpticsPlanet is online now
Vendor/Retailer
 
Join Date: Apr 2009
Posts: 2,073
iTrader: 4 / 100%
Default

Where did you buy from? You can always call Trijicon to verify the serial number.

Even between two different RMRs, you might experience different parallaxes. Trijicon states it is "Parallax free" but that is an iffy claim especially without associating a distance with that claim.

+1 for the Just Shoot It advice. If it holds zero than good to go.

-Matt S.
__________________
CalGunners: Take 5% off your order of $50 or more at OpticsPlanet by using coupon code CALGUNS! Some exclusions apply.

OpticsPlanet
http://www.opticsplanet.com
Toll-Free (888) 504-7864
Send us a private message if we can be of help!
Reply With Quote
  #6  
Old 07-12-2018, 3:55 PM
melonpan melonpan is offline
Junior Member
 
Join Date: Jul 2015
Posts: 12
iTrader: 0 / 0%
Default

Went to the range and had lots of trouble just trying to zero. Almost as if the adjustment range was such that it could not zero at 25 yards and closer. Not sure if that makes sense. Maybe said a different way, it seems that no matter how much I adjusted the windage the dot would be to the left of the bore axis. Could not get it to line up with the bore.
Reply With Quote
  #7  
Old 07-12-2018, 8:47 PM
Brush Guard Brush Guard is offline
Senior Member
 
Join Date: Jan 2015
Posts: 544
iTrader: 0 / 0%
Default

Do you mean that when viewing the red dot through the glass, it appeared as if the red dot was left of the bore axis, or the groups were always left of the target center?

Sounds like it may be a mount issue if the red dot always appeared to be left of the bore axis.

How did the rifle group? Were you able to adjust the RMR so that the rife grouped where the red dot was pointed?

Last edited by Brush Guard; 07-18-2018 at 3:29 PM..
Reply With Quote
  #8  
Old 07-18-2018, 12:50 PM
melonpan melonpan is offline
Junior Member
 
Join Date: Jul 2015
Posts: 12
iTrader: 0 / 0%
Default

Yes, had planned on setting up so the rifle grouped where the red dot pointed. Confirmed that there is a mounting issue but still not quite clear if I have an issue with the RMR itself. For those that uses RMRs, do you generally find that where you center the red dot in the window makes a difference where the shot hits or that it doesn't matter where you center the dot in the window (e.g., left of center or top of the window.
Reply With Quote
  #9  
Old 07-18-2018, 3:39 PM
Brush Guard Brush Guard is offline
Senior Member
 
Join Date: Jan 2015
Posts: 544
iTrader: 0 / 0%
Default

There is a good thread on this topic
http://www.calguns.net/calgunforum/s....php?t=1462682

I think the idea with most red dots is that the dot does not have to be centered in the window in order for the shooter to be on target.

Some products seem to work better than others.
Reply With Quote
  #10  
Old 07-19-2018, 4:02 AM
alexisjohnson alexisjohnson is offline
Senior Member
 
Join Date: May 2016
Posts: 565
iTrader: 0 / 0%
Default

If you're truly having a poi shift at 7 yards due to parallax...you have a problem..

The thing is...if you change your grip...then the gun will shoot differently. My guess is that is what's happening... You're altering your grip to test the parallax and it is changing the poi.
Reply With Quote
  #11  
Old 07-19-2018, 5:22 AM
HK Dave's Avatar
HK Dave HK Dave is offline
Calguns Addict
 
Join Date: Oct 2008
Location: Rowland Heights, CA
Posts: 5,352
iTrader: 73 / 100%
Default

Hmm from what I recall, nearly all red dots aren’t parallax free until 50 yards.
Reply With Quote
  #12  
Old 07-19-2018, 5:24 AM
HK Dave's Avatar
HK Dave HK Dave is offline
Calguns Addict
 
Join Date: Oct 2008
Location: Rowland Heights, CA
Posts: 5,352
iTrader: 73 / 100%
Default

Quote:
Originally Posted by melonpan View Post
Went to the range and had lots of trouble just trying to zero. Almost as if the adjustment range was such that it could not zero at 25 yards and closer. Not sure if that makes sense. Maybe said a different way, it seems that no matter how much I adjusted the windage the dot would be to the left of the bore axis. Could not get it to line up with the bore.
Like you mention in a later post, this points to a mounting issue.

Fix that first then zero at 50 yards.
Reply With Quote
  #13  
Old 08-13-2018, 9:32 AM
melonpan melonpan is offline
Junior Member
 
Join Date: Jul 2015
Posts: 12
iTrader: 0 / 0%
Default

thanks to all that opined....finally caved in and took it to gunsmith to definitively figure out what was wrong. Was both a mount issue and scope issue. Luckily the place I got it from had a generous return policy
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT -8. The time now is 7:05 AM.




Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Proudly hosted by GeoVario the Premier 2A host.
Calguns.net, the 'Calguns' name and all associated variants and logos are ® Trademark and © Copyright 2002-2018, Calguns.net an Incorporated Company All Rights Reserved.
Calguns.net and The Calguns Foundation have no affiliation and are in no way related to each other.
All opinions, statements and remarks made by Calguns.net on this web site and elsewhere are solely attributable to Calguns.net.