Does this kind of optic exist?

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TTv2

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I have an over/under Mossberg Maverick 12 gauge and adapters to shoot .22 and .32 from it. The adapters are accurate, but the issue I have is the POI is way off the POA and I cannot adjust the sights, however there is a pic rail I could mount an optic to. Since I have the ability to remove the adapter and use both barrels for 12 gauge, I would like an optic that can be zeroed for the .32 adapter but has a secondary setting that I can press a button and change to a zero for the shotgun.

Does such a thing exist? A red dot or holographic sight that has multiple settings for different zeroes?
 
I have an over/under Mossberg Maverick 12 gauge and adapters to shoot .22 and .32 from it. The adapters are accurate, but the issue I have is the POI is way off the POA and I cannot adjust the sights, however there is a pic rail I could mount an optic to. Since I have the ability to remove the adapter and use both barrels for 12 gauge, I would like an optic that can be zeroed for the .32 adapter but has a secondary setting that I can press a button and change to a zero for the shotgun.

Does such a thing exist? A red dot or holographic sight that has multiple settings for different zeroes?
How about a reflex dot on and offset mount for the shot, and something like a 2x (ish) for the pills mounted on top? Or a speed bead mounted with an ar cowitness type optic?
 
If you take your insert and put a witness mark on it so you can clock it in the bore say at 12, 3, 6 & 9 does that have any effect on POI?

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How far off is “way off” and at what distance?
 
I’m having trouble picturing an optic on an O/U shotgun. How and where would you mount it? I like the idea, I’m just stuck on how to do it. Perhaps some of the magnetic beads could be useful to make POA and POI closer. Especially if there is a way to offset the bead which will block the factory bead and push the magnetic sight off to one side or the other. Alternatively a reciever sight that is fully adjustable would be nice but it may take a custom mount to put it on the gun.
 
I’m having trouble picturing an optic on an O/U shotgun. How and where would you mount it? I like the idea, I’m just stuck on how to do it. Perhaps some of the magnetic beads could be useful to make POA and POI closer. Especially if there is a way to offset the bead which will block the factory bead and push the magnetic sight off to one side or the other. Alternatively a reciever sight that is fully adjustable would be nice but it may take a custom mount to put it on the gun.
Mossber maverick o/u tactical, hs12 i think is the model number.
There is a pic rail at the back of the barrels that doubles as its "rear" sight.

Might be able to use a receiver sight and a higher front, then a dot for the inserts.
 
Does it have a bead? Maybe you just use that for the scatter gun stuff and use a QD mount with whatever you want for the other stuff.
No, front fiber optic and the rear is a slot machined into the pic rail. Could do a QD mount, but I also have two pic rails on each side of the barrels, 3 and 9 O'clock, so I could use 45 degree offset sights, just the front sight would have to be backwards.
 
If you take your insert and put a witness mark on it so you can clock it in the bore say at 12, 3, 6 & 9 does that have any effect on POI?

How far off is “way off” and at what distance?
Last I remember it was low by 6 or 8 inches at 15 yards, aiming off paper didn't help with the groups. Windage was good tho.

I think it's a twofold issue: first being the barrel regulation isn't great and the other is the weight of light .22 and .32 bullets is not in agreement with fixed sights meant for shotguns.

I don't recall indexing the adapter at all, it was more a "in which barrel did the insert shoot better" test. I eventually decided it was too much a PITA to remove the insert from the bottom barrel, so it only sees use in the top. I can try an index test in the future, but I get the feeling that's going to affect the windage more than the elevation.
 
Might be able to use a receiver sight and a higher front, then a dot for the inserts.
I'm not sure what you mean about receiver sight and the front sight isn't coming off. The issue I see with an RDO is there may not be enough adjustment to set a zero for the .32, but I have been given evidence that makes me think a heavier projectile (.45-70) can shoot closer to POA and that's the direction I'm looking at going now.

I don't know that for a fact tho, not in my shotgun at least, so before I seriously consider getting the .45-70 insert I want to know what's available for an optic that I could use for both .45-70 and 12 gauge.

If it ends up that I have to run an offset 45 section of rail and put a RDO on it to effectively shoot .45-70 and leave the stock sight system in place for 12 gauge... I guess that's doable. Not ideal tho.
 
Last I remember it was low by 6 or 8 inches at 15 yards, aiming off paper didn't help with the groups.

Might try a larger backer board at have a repeatable aim point 6 or 8 inches above something where you can see group size.

I have a triangle file that I have sanded the teeth off one side so it is “safe” (can’t remove any metal) it is 60 degrees from a cutting side. With this I can install a fiber optic dovetail front sight (I like Dawson) and a folding adjustable rear.

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85B875F5-C3DB-4D84-BFD8-EC65D6DA3C45.jpeg

Do you have a photo of the configuration of your barrel/rail?
 
I have a inexpensive green/red dot. The red dot hits higher then the green. Unfortunately also a little Left. I don't think it would be too hard for a company to make a optic with a calibrated difference between 2 colors or independently adjustable.
I realize this doesn't help you but it would it it existed.
 
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