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EOTech "Thermal Drift" and parallax issues.

Posted on 10/5/15 at 9:32 am
Posted by Bagger Joe
Baton Rouge
Member since Mar 2014
853 posts
Posted on 10/5/15 at 9:32 am
This was brought to my attention this morning by someone with first person knowledge.

EOTech Safety of Use Message
This post was edited on 10/5/15 at 9:35 am
Posted by Clames
Member since Oct 2010
16588 posts
Posted on 10/5/15 at 10:04 am to
Something to keep in mind next time I go shooting in the Antarctic or the Saharan Desert.
Posted by Bagger Joe
Baton Rouge
Member since Mar 2014
853 posts
Posted on 10/5/15 at 10:12 am to
quote:

Something to keep in mind next time I go shooting in the Antarctic or the Saharan Desert.


It happened at the BRPD/EBRSO Range last week so temperatures don't need to be that extreme.
Posted by burgeman
Member since Jun 2008
10362 posts
Posted on 10/5/15 at 2:23 pm to
Put another plus in the aimpoint column
Posted by bbvdd
Memphis, TN
Member since Jun 2009
25006 posts
Posted on 10/5/15 at 2:38 pm to
4 MOA drift?

Wow, how will I ever compensate.
Posted by Clames
Member since Oct 2010
16588 posts
Posted on 10/5/15 at 3:00 pm to
I'd have to see data on how the weapons were conditioned prior to use on that range. I'll tell you this, neither EOTech or AimPoint passed rough handling tests with respect to maintaining zero. I'm pretty sure impact is more likely than being exposed to temperature extremes at any level of use which. I know it is because getting M68's mounted, properly zeroed, and maintaining their zero is a hell of a chore everytime I conduct weapons qual with this unit. I'd rather use irons.
This post was edited on 10/5/15 at 3:26 pm
Posted by GeauxxxTigers23
TeamBunt General Manager
Member since Apr 2013
62514 posts
Posted on 10/5/15 at 3:09 pm to
Iron sites don't drift
Posted by kengel2
Team Gun
Member since Mar 2004
30805 posts
Posted on 10/5/15 at 5:27 pm to
I read that. Over the range of 160 degrees, Id bet your ammo has more drift than 4 moa.
Posted by dawg23
Baton Rouge, La
Member since Jul 2011
5065 posts
Posted on 10/5/15 at 8:01 pm to
I prefer the Aimpoints as well.

But FWIW none of the red dot sights are 100% parallax-free. They will be parallax-free at some distance(s), but not at all distances.
Posted by Bulletproof Lover
Baton Rouge
Member since Sep 2008
1900 posts
Posted on 10/5/15 at 8:23 pm to
I saw it happen at the Ascension Sheriffs range last week as well. Have owned several EoTechs. I prefer Aimpoints.
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