Two Optic Setup


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LoneRider
November 20, 2009, 02:38 PM
Reading one of Zak Smith's articles while doing research for my upcoming 'budget DMR' project (http://www.thehighroad.org/showthread.php?t=443889&highlight=Semiautomatic+DMR) (to be done next spring after I've settled in at NTC for my new Army assignment) I've come across the 'Two Optic setup'. I assume this means mounting both a close-in reflex sight in conjunction with the telescopic sight (the Night Force 2.5x10 scope was my primary choice).

The rifle I am modifying is a Remington R15 VTR (http://www.thehighroad.org/showthread.php?t=466826&highlight=Remington+R15+VTR) with fold up BUIS and the aforementioned variable power scope.

What are the pros and cons of this 'two-optic setup' I've heard about?

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Afy
November 20, 2009, 03:40 PM
Not quite sure of what a two optic set up is. Is it like a binocular? If so... why?

LoneRider
November 20, 2009, 03:52 PM
It's a no magnification reflex sight combined with a telescopic sight.

Avenger29
November 20, 2009, 03:54 PM
Not quite sure of what a two optic set up is. Is it like a binocular? If so... why?

No, it's not like a binocular.

The Nightforce 2.5-10 scope is an optic that is best suited for distance work. Close in, it is very lacking. Hence, many people mount a small red dot site either on top of the scope or in an angle mount that puts it about the 2 O'clock position.

The two o'clock position, IMHO, is best. You only have to roll the rifle a bit to get into firing position and it's not too bad.

The top of the scope has height over boreline issues

The only thing I can tell you is that I would take a 2 o'clock mounting and put an Aimpoint H-1 or T-1 on there.

http://www.tacticalgunfan.com/images/stories/news/art/products/t/tnvc_murlm_mounted_370_tnvc.jpg

Like the above picture, except I've seen many with the RDS mounted closer to the magnified optic.

LoneRider
November 20, 2009, 04:53 PM
Thanks for the idea Avenger29. First order of business is accquiring the rifle and putting my BUIS and getting those zeroed. Then I'll mount the scope before I add the Aimpoint. I'm still in the research and development phase of constructing my own DMR at the moment.

Avenger29
November 20, 2009, 05:16 PM
Thanks for the idea Avenger29. First order of business is accquiring the rifle and putting my BUIS and getting those zeroed. Then I'll mount the scope before I add the Aimpoint. I'm still in the research and development phase of constructing my own DMR at the moment.

Here's the LaRue offset mount. http://stores.homestead.com/Laruetactical/Detail.bok?no=383

Dunno about that Nightforce optic, but I reckon it would be a good choice. I'd be more inclined to go with a Trijicon Accupoint scope (not the ACOG, but one of their variable scopes)
Mount it in a LaRue mount

Like this 2.5-10
http://stores.homestead.com/Laruetactical/Detail.bok?no=141

They also make a 1-4x that's rather interesting

http://www.trijicon.com/user/parts/parts_new.cfm?categoryID=5

Zak Smith
November 21, 2009, 04:29 AM
If you don't need to wear a bunch of body armor and gear, mount it above and/or above and a little to your strong side of the optic. If you don't, mount it on the rear of the tube at 1-1:30'o'clock. Mounting a dot optic as far forward as in that photo is much less effective than mounting it close. And don't forget you need to train to make the potential/theoretical speed advantage actually not a liability.

-z

LoneRider
November 21, 2009, 08:37 AM
I don't anticipate wearing body armor when using this rifle I'm building. At most I'll likely wear my LBV or LCE when training with this thing. I'm not sure where I can find ranges that will let me train in more than a bench position in the Mojave area of California though.

Also I've heard of plenty of good fire and maneuver courses I can use as great training before I try any 3-gun stuff that I'm gonna put my budget DMR through. Any recommendations for training?

Zak Smith
November 21, 2009, 01:46 PM
Tactical Response puts on very good fighting rifle training.

LoneRider
November 22, 2009, 11:56 AM
Thanks Zak Smith.

jmorris
November 22, 2009, 12:08 PM
To make the transition from one to the other seemless having them both at the correct height is very important. Another advantage is that they are set to different zeros.

http://i121.photobucket.com/albums/o213/jmorrismetal/3g/3gunar.jpg

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