Elcan SpecterOS 3.0

Does anyone care to explain how the B-models external adjustment works? It specifies its a "5.56 external ballistic adjustment". Is it a matter of turning your elevation turret to set graduations (100, 200, 300m etc) that elcan has approximated for a set 5.56 load, or just a standard fast dial turret like on a lot of the target/tactical scopes (ie. I do the math on required elevation etc)?

The reason I ask is that I would be potentially mounting this on a .308, so I am curious if the external adjustments will be useless to me... Thanks
 
The elevation dial is range marked in metres for a 62 gn load. 1/2 MOA hash marks /detents in between range markings. Easy enough to build a range card from.

Distance X : Range y (plus or minus #clicks)

Windage is straight 1/2 MOA adjustments, max 9 in either direction from zero.
 
I'll have to reach out to them and see about caps / turrets for 7.62 NATO.
Bolivar said:
The elevation dial is range marked in metres for a 62 gn load. 1/2 MOA hash marks /detents in between range markings. Easy enough to build a range card from.

Distance X : Range y (plus or minus #clicks)

Windage is straight 1/2 MOA adjustments, max 9 in either direction from zero.
Click to expand...
 
Sakonut said:
Does anyone care to explain how the B-models external adjustment works? It specifies its a "5.56 external ballistic adjustment". Is it a matter of turning your elevation turret to set graduations (100, 200, 300m etc) that elcan has approximated for a set 5.56 load, or just a standard fast dial turret like on a lot of the target/tactical scopes (ie. I do the math on required elevation etc)?

The reason I ask is that I would be potentially mounting this on a .308, so I am curious if the external adjustments will be useless to me... Thanks
Click to expand...

Bolivar said:
The elevation dial is range marked in metres for a 62 gn load. 1/2 MOA hash marks /detents in between range markings. Easy enough to build a range card from.

Distance X : Range y (plus or minus #clicks)

Windage is straight 1/2 MOA adjustments, max 9 in either direction from zero.
Click to expand...

xdmer said:
I'll have to reach out to them and see about caps / turrets for 7.62 NATO.
Click to expand...

Great questions and info here :d

I have another (question that is :redface: ). My impression was that some scopes are more capable of withstanding the concussion of a given caliber. So I'm curious if Sakonut and xdmer will have more issues than just range etc with this scope as it seems to me that Elcan is saying it is suitable for .223, not necessarily .308?

Now, "knowing" (read lots about them) how robust these Elcans are, perhaps heavier calibers will not matter as much to this scope. Just curious from an over all perspective as to other less robust scopes, and this one too of course. Thanks.
 
That's my understanding and the OS3 is advertised as coming calibrated to support 556 and 7.62x51 (in addition to other calibres that are not mentioned). Mine sits on a NR Bush and Range gun. I've asked about 7.62x51 and 7.62x39 turrets tonight (these are all for my xcr's), I'll post any response here.
Gunnerlove said:
Both the OS4 and OS3 are rated to 450g's. As the OS4 is available with a 7.62 reticle I think they will both take 7.62/.308.
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Gunnerlove said:
Both the OS4 and OS3 are rated to 450g's. As the OS4 is available with a 7.62 reticle I think they will both take 7.62/.308.
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Wow. I thought the "450g's" in Elcan's literature (which I'm assuming, probably incorrectly, is 450 times the force of gravity?), was a misprint. Cool, thanks.
 
Gunnerlove said:
Yup a g is 1x the force of gravity.
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HaHa I knew that part, it was 450 times the g force that I a hard time with. Well, my Grandfather served in the artillery at Vimy Ridge. He swore by the toughness of Canadian soldiers. Looks like Elcan comes by its toughness naturally :rockOn:
 
In the specs it says eye relief is 66mm. I'm thinking that should let you run bus behind if you shoot nose to charging handle? Just curious cause the 2 guys who've posted up pics of their setups have the OS3 at the extreme back of the receiver? Also contemplating where to spend my Eotech refund cash, haha
 
Eye relief is kind of critical and 66mm is only 2.5 inches, so the eye box is small. Mine is mounted furthest to the rear too, it needs to be.
rugbydave said:
In the specs it says eye relief is 66mm. I'm thinking that should let you run bus behind if you shoot nose to charging handle? Just curious cause the 2 guys who've posted up pics of their setups have the OS3 at the extreme back of the receiver? Also contemplating where to spend my Eotech refund cash, haha
Click to expand...
 
So, armament technology sales responded to me saying the SpecterOS 3.0 is only available in 556. It was suggested that through trial and error I create dope / range charts for 7.62x39 and for 7.62x51 to use the M145 or any of the Specter DR series.
xdmer said:
I'll have to reach out to them and see about caps / turrets for 7.62 NATO.
Click to expand...
 
Just got my Eotech return approved. I'm torn between the OS3x or a T1 with a magnifier (that I already have). The weight is a wash as is the price. I'm sure I'd enjoy the Elcan more past 100 (which I get to shoot frequently) but really have very little experience shooting a fixed magnification sight inside 100. Clearly it doesn't hold you back in CQB, Bolivar? Any advice would be greatly appreciated!
 
I've got my OS3 mounted somewhat far back, but not nearly as far as the Specter or OS4. The other two (soon to be three, as I'm waiting for my second OS4 to arrive) of my Elcans need to be mounted quite far back...



 
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rugbydave said:
Just got my Eotech return approved. I'm torn between the OS3x or a T1 with a magnifier (that I already have). The weight is a wash as is the price. I'm sure I'd enjoy the Elcan more past 100 (which I get to shoot frequently) but really have very little experience shooting a fixed magnification sight inside 100. Clearly it doesn't hold you back in CQB, Bolivar? Any advice would be greatly appreciated!
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What's your use? CQB is not as dynamic as say 3 gun. Don't have to find and transition between targets under the pressure of going as fast as you can. I don't have ton of experience with these but the "corner" reticle points are intended to give you a fast, course aiming point where speed is more critical than absolute precision.

The fixed 3x does aid in precision shot placement even up close though which is a positive for accuracy based shooting events/clinics. For CQB say, I can see my hits, so I am able to confirm that we am hitting where I want, or adjust a needed on subsequent exposures.
 
I'd like to try some CQB comps eventually. For now I do a lot of offhand shooting inside 100, working at quickly transitioning from targets around 25 out to 100 and back again and anything in between. I also do lots of positional shooting out to 200, 300, 400, 475. Basically trying to set my rifle (Colt 6920) as a general use carbine.
 
Probably the very best OS3 option would be the A model and elevation turrets. Best of both worlds.

If I were doing rapid transitions between 25 and 100, I'd probably set my elevation dial at 300 and realize I will be a bit low at 25 and high at 100.

3X does not impede my ability to find a target at 25 and is enough magnification for a torso sized target at 500m.
 
Thanks, that's kinda what I was leaning towards. My Eotech is zeroed at 200 (has the second dot for 500) so similar kinda concept. Keep at at 300 mostly and adjust the turrets for slower, positional shooting at longer distances. Guess I have to order one now...
 
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