RMR Size For Shotgun

Sniffer

Sniffer

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Long story short I'm in the market for an RMR to use with my shotguns, question is what size should the dot be? I want it to accurate enough for slugs at 50 yards.

With this in mind I'm looking at the 6.5 MOA and 3.25 MOA versions.

A few folks on here swear the green triangle is the ticket but it looks like its ~12 MOA which is pretty big. They sighted it to use the tip of the triangle for slugs. Not even sure this version is still available.
 
Sniffer said:
Long story short I'm in the market for an RMR to use with my shotguns, question is what size should the dot be? I want it to accurate enough for slugs at 50 yards.

With this in mind I'm looking at the 6.5 MOA and 3.25 MOA versions.

A few folks on here swear the green triangle is the ticket but it looks like its ~12 MOA which is pretty big. They sighted it to use the tip of the triangle for slugs. Not even sure this version is still available.
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Not on a shot gun but I own 2 Green triangle RMR's on short very barreled rifles, its one of my favorite, I own 6 different RMR's

The largest dot size I have is a 9moa green dot on a pistol, which is about the size of the middle portion of the 12.9 moa triangles, nice thing about the triangle is like you said I zero them so the top point of the triangle is point of impact for precision, but the large triangle is super fast and easy to pick up short range targets quickly

Also any green RMR is going to be a "dual illuminated" using tritium and fiber optics to illuminate itself and does not need batteries, and will always be on ready to use

Yes RMR with Triangle are available in green or amber

http://166.62.58.237/na_en/assets/image/RMR-Info_popup.jpg
 
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I’ve used both the 9moa amber dot and 12 moa green triangle on my benelli. it’s been living with the 12moa green triangle but I feel the 9moa dot is a better fit for shotguns. The triangle is nice to use the tip of the triangle at 100m and it’s pretty accurate out that far with slugs but the 9moa dot I feel is more indicative of a shotguns practical accuracy in the >50m ranges. Triangle is a better rifle fit imo. If your set between the two moa’s you listed I’d go for 6.5, but I like the 9 on my shotgun.
 
JohnnyP636 said:
Not on a shot gun but I own 2 Green triangle RMR's on short very barreled rifles, its one of my favorite, I own 6 different RMR's

The largest dot size I have is a 9moa green dot on a pistol, which is about the size of the middle portion of the 12.9 moa triangles, nice thing about the triangle is like you said I zero them so the top point of the triangle is point of impact for precision, but the large triangle is super fast and easy to pick up short range targets quickly

Also any green RMR is going to be a "dual illuminated" using tritium and fiber optics to illuminate itself and does not need batteries, and will always be on ready to use

Yes RMR with Triangle are available in green or amber

http://166.62.58.237/na_en/assets/image/RMR-Info_popup.jpg
Click to expand...

I`m cagey about the dual illuminated as I have read it can be weak / wash out in sunny conditions.
 
Bigger is generally quicker, but less precise. Let's face it, for a shotgun, where 150 is pushing it, the type of precision being discussed doesn't apply. A 12 minute triangle will cover most of a chest sized target at 100 and all of it at 150, but generally speaking that's not an issue, because generally speaking most folks would be happy with any kind of hit with a slug at that range. I've often thought that the EO Tech style reticle - a dot in the middle with a wide circle around it- made the most sense for shotguns, it's just that their dot size is too small.
 
I personally find electro-optics on shotguns to be of limited benefit unless you you're in poor lighting conditions, or for whatever reason are wearing a mask or face shield.
 
Sniffer said:
I`m cagey about the dual illuminated as I have read it can be weak / wash out in sunny conditions.
Click to expand...

I see green better then red personally, I have red RMR's in different sizes but they sometimes in certain instances wash out on me and get really starburst. That does not happen to me with the green dual illuminated ones, the outer shape is always sharp and defined to my eyes

So personally I have not come across a circumstance where I cant see them well indoors or outdoors

Top right is what can happen to me with red dot RMR's at times
at3_astigmatism_diagram_and_examples_large.jpg


The adjustable ones it gets worse the higher I adjust the brightness
 
enefgee said:
Bigger is generally quicker, but less precise. Let's face it, for a shotgun, where 150 is pushing it, the type of precision being discussed doesn't apply. A 12 minute triangle will cover most of a chest sized target at 100 and all of it at 150, but generally speaking that's not an issue, because generally speaking most folks would be happy with any kind of hit with a slug at that range. I've often thought that the EO Tech style reticle - a dot in the middle with a wide circle around it- made the most sense for shotguns, it's just that their dot size is too small.
Click to expand...

I like the style of their reticle but they are the most grainy and washed out reticle I have to my eyes. I have an older model Eotech (bought 5 years ago)

Again it might just be my eye sight but with mine I see this
118516d1447469050-eotech-holosights-blurry-dot-dot.jpg
 
JohnnyP636 said:
I like the style of their reticle but they are the most grainy and washed out reticle I have to my eyes. I have an older model Eotech (bought 5 years ago)

Again it might just be my eye sight but with mine I see this
118516d1447469050-eotech-holosights-blurry-dot-dot.jpg
Click to expand...

That interesting, I tried the Vortex UH1 holographic and it looked grainy like that. Most regular non holographic red dots look fine by contrast.
 
I would go with the smaller dot. It will still be easy to pick up if it's set to a bright setting, and if you happen to want to switch it to a rifle or pistol later it will be more sppropriate.

Sniffer said:
That interesting, I tried the Vortex UH1 holographic and it looked grainy like that. Most regular non holographic red dots look fine by contrast.
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I think it's because it's actually made of multiple small laser projections, and you're getting bloom off every single one. I have astigmatism and it looks like the pic when in poor light, but if I go outside on a normal day, then the reticle on my EOTech cleans up well and I can barely see any of the bloom/streaks. It's still grainy, but it doesn't have to look perfect to be useable.
 
Still looking for one of these. I wish there was somewhere that I could physically see the various options but I'm leaning towards the 3.25 adjustable for the reasons listed ^^^^^ above.

As an FYI to others, from what I can tell the adjustable version is the only variant that can be locked on a certain brightness level (if that makes sense) - the dual illuminated & non adjustable version get brighter / less bright depending on ambient light levels - (the adjustable can do this do but it can be disabled), I want to be able to lock it in to a certain brightness so I dont get any surprises.
 
One of the nice things about the dual-illumination models is that they are as bright as you need them to be when you need them to be. In bright daylight, the fiber optic picks up the daylight, and the dot really pops, but the dimmer the light, the less brightness is produced by the fiber optic, and the more the RMR relies on the tritium. In the dark, you get just enough illumination from the tritium to be exactly what you need with no interference from the fiber optic.

I have a 9.0 MOA amber dot dual-illuminated RMR and I find it to be the perfect unit for quick acquisition in all light conditions for either shotgun or pistol. 9 MOA may sound big but looking through the sight, it's not big enough sometimes! lol The only way to really know what you like, unfortunately, is to visit a shop that carries them and have a look for yourself. I was convinced I wanted a 3 MOA LED model when I went into the store a couple of year back. The bigger dot and dual-illumiunatin were not even on my radar until I tried it.
 
870P said:
I personally find electro-optics on shotguns to be of limited benefit unless you you're in poor lighting conditions, or for whatever reason are wearing a mask or face shield.
Click to expand...

While I would generally completely agree with you on this, my perspective on the matter has changed significantly since reading glasses have become the most crucial component of my EDC inventory! :d

Irons, even ghost rings, get might hard to pick up quickly in dim light these days. I'm hoping this is as bad as it gets!
 
rifleman338 said:
What are you planning on using it for?
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Competition. For 3 gun matches I run in Tactical so no optic, but I do some shotgun only matches where its the same class if you run an optic or not.

My problem is slugs. My Versamax shoots slugs crazy high at 50 (~10") so a red dot will help with that. Ive tried two different brands and they are both consistent in how they shoot and both are high (one shoots really high and centre while the other shoots a couple of inches lower and a couple of inches to the right).

I got to thinking about it some more earlier and maybe the green 12.9 MOA triangle would work. Using the tip for precision as others have mentioned would probably work quite nicely based on where its shooting (high) and it would be good for close quarters.

That version is also quite a bit cheaper, I might try to find somewhere that has one in stock with a return / exchange policy if I get it and don't like it. It would be so much easier if there was somewhere close by to check them out in the flesh.
 
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