Sig Romeo4 BDC mill/moa specs?

wjm308

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Just bought a Sig Romeo4S with the Sig Quad reticle, one of the options is for a BDC with 4 dots but true to Sig they provide no information in the manual they provide with the scope. I am assuming the dots are 100y zero at top, then for M855 ammo 200, 300 and 400? But I hate to assume, does anyone know for sure and also better yet, does anyone happen to have the mil or moa value for each dot below center? The reason I ask is this scope sits atop a 300BLK that I use primarily for subsonic work and would like to calculate the impact distances for the dots using my subsonic load ballistics. Also, if anyone is "in with Sig" if you could also find out the mil or moa value of that bottom tick mark at top and bottom, that'd be great as well. Below is a pic of the reticle when the 4 dots display along with the bottom tick, the arrows point to where I'm hoping to identify the mil/moa value below the center dot.

Edit - I emailed Sig and they provided me with the subtension detail in MOA, the below image has been updated to include that

7043962
 
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Snuby642

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The sig site lacks a lot of information.
Ammo / caliber / barrel specific sights kind of suck! I have a couple.

They never seem to line up on my firearms and if you use a different caliber forget it.

You are just going to have to set it at probably 50 zero, then move to 75 and see if a dot lines up.
And try at 100.

With 300blk subs you should get on target at 100 with one of the dots, I hesitate a guess
Of the third dot down as I have a similar optic on my 300blk sbr.

As for hunting with subs 100yd ish is my personal limit as I like to drop things solidly.
Im old and don't like to drag game far and wait for a logistical old guy advantage. Lol

Good luck getting the subtensions you seek but I suggest do your own test.
 

wjm308

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Thank you Snuby, not a big fan of BDC's myself which is why I was hoping for the mil/moa equivalent as then I could use my ballistics. I may have to test myself unfortunately, was hoping to save myself the trouble, but it'll be a fun process ;)
 

Snuby642

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So many manufacturers doing this.
I think on purpose to try and sell more optics.

If the dots / stadia being in mil / moa subtensions would make my day on many,
that sig is a perfect example.

At the least the same manufacturer could make a "standard model ".
An optic with multiple reticles on scopes or red dots should have moa and mil.


I have gone to on my cheap stuff just ignoring the bdc and dialing up turrets.
What a waste on thier part
 
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Snuby642

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That was good of them.
I get approximately 3 moa @75 and 6 moa @100 with a 50yd zero and 220gr subs at 1060fps for a refrance.