First, let me apologize if this has already been addressed. I did a search and came up with many pages of results, but none that I could fine to answer my question.
I have a new Aimpoint PRO that I have just added and have a question about the zero on it.
For a 50/200 m zero the iron sights give me a POI that is approx. 1.2” below POA. However I have never used a red dot sight before. With my sights flipped up, they are in the lower 1/3 of the Aimpoint field of view with the red dot a little above the irons (approx. in the middle of the Aimpoint field of view). This gives me POI that is currently approx. 5” below POA for the red dot. Unfortunately I do not have ready access to a 200 meter range so I am not able to “play” with it to see what it does.
Should the red dot POA be the same as the BUIS POA or should it be above them? If the red dot POA is supposed to be above the BUIS POA, then how high above POI should the POA be? If the two should have the same POA, I am assuming that having the dot in the lower 1/3 of the Aimpoint field of view is not a problem.
Unfortunately I am new to red dot sights and do not know all the “ins and outs” of their relationship to the BUIS yet.
The iron sights give me a POI that is approx. 1.2” below POA. However I have never used a red dot sight before. With my sights flipped up, they are in the lower 1/3 of the Aimpoint field of view with the red dot a little above the irons (approx. in the middle of the Aimpoint field of view). This gives me POI that is currently approx. 5” below POA for the red dot. Unfortunately I do not have ready access to a 300 meter range so I am not able to “play” with it to see what it does.
The PRO does not give you a “TRUE” lower 1/3 co-witness. Nor doe it give you a “TRUE” absolute co-witness (somewhere in between).
Should the red dot POA be the same as the BUIS POA or should it be above them? If the red dot POA is supposed to be above the BUIS POA, then how high above POI should the POA be? If the two should have the same POA, I am assuming that having the dot in the lower 1/3 of the Aimpoint field of view is not a problem.
This is entirely up to you, but I would zero both at 50yds and then confirm zero at 200 (or more likely 190+).
So to make it easy on you, zero your irons and PRO independently from one another.
C4,
Thanks, you are right about the 50/200, not sure what I was thinking.
Thanks for the information. Unfortunately I only have a 100 yard range that is readily available to me. I’ll go ahead and zero them separately, as you suggested, and see what that does for me at 100 yards.
How big of an issue is this?? When I dialed in a loaner EOtech (552?) it seemed to co-witness perfectly.
I had been leaning toward one of the newer EOTech’s (buttons on the side), but the Pro with the integral mount is making me rethink. Looks lighter for sure.
Sure wish they had a dual reticule option, I really liked the EOTech hybrid reticule with the 1/3 MOA center dot and 65 MOA for CQB.
Thanks Eric. I get that much. I am just trying to figure out why Grant singled out the pro as not being able to give a true cowitness or lower 1/3, but nothing was mentioned about the mount.
“The PRO does not give you a “TRUE” lower 1/3 co-witness. Nor doe it give you a “TRUE” absolute co-witness (somewhere in between).”
If it’s all about the mount, why did you specify the PRO as not providing a 1/3 or ‘TRUE’ co-witness and completely leave out the mount as part of the reasoning?
The PRO comes from the factory with a mount already attached to it (package deal). So the TRUE definitions of “Absolute” and “Lower 1/3” do apply to this optic/mount combo.
With that said, I wouldn’t get wrapped around the axle about this.
LOL. I’m not even close to that. I was just confused, and now that you clarified, I got it.
I didn’t realize that the PRO came with its own mount. Not knowing that, is what confused me on why it didn’t give you a co-witness.
that’s what makes the PRO such as spectacular deal - you get the optic, a QRP2 mount (heavy but very practical) and flip-up lense covers with the rear one being transparent.
anyway, co-witnessing is always a function of the height of the optic, thereby, the mount…
I didn’t realize that the PRO came with its own mount.
It’s a great package deal that comes with the new QRP2, which is a substantial improvement over the earlier version. Still, some folks opt for something more familiar, which is fine, as you could always sell of the QRP2. The PRO with supplied mount is shown.
Something to watch for with the QRP2. I’ve read some have come loose on the rail. I’ve been to range 3 times, 2 classes with it, tightened 3 clicks from the original setup and noticed it loosened to the point of being just snug, less than one click.
Is there any way to adjust the tension on the rail screw? I think a little more and 3 clicks it would be fine.
