PDA

View Full Version : Red-dot sights


M-1
06-30-2007, 5:35 PM
First of lets start by saying I am a total newb when it comes to red-dots. I have been more concentrated in building OLL rifles, than woring about the sights. All my other rifles use iron sights, like I am going to attach a red-dot to my M-1 Garand.:43: LOL
Anyways, here is my situation. I got a red-dot a while back just like this one
http://www.mydiscountstation.com/optics/dot-electronic-sights/ultra-dot/ultradot-strikedot-red-dot-sight/prod_540.html
The ring base was a little short, so I got some higher rings. While looking into the scope, are you suppose to line up the red dot with the front sight? When I move my head around, the red dot moves also while the gun is stationary. Does the red dot act kind of like your rear sights? I have taken this rifle out once, and it was kind of a pain to shoot with. At 100 yards, I had to keep the front sight pointed in the right direction, and with the red dot, aim approximately about 2mm above the front sight for me to get close to my target. I am so use to iron sights that I can shoot faster and more accurate with open sights. Are the real acogs and eotechs like this too, where you move your head and the red dot moves also?
I am planing to purchase an eotech after finishing my Fal, G3, Ar-10, my second AR-15, and lets not forget I really want a 1919. As you can see my funds are a bit short right now.
Thanks,

Vepr62
06-30-2007, 8:10 PM
Your red dot should be at POI/POA if sighted right, and if you move your had without moving a gun, it supposed to stay at POI/POA as long as you are able to see the dot. And target acquisition is much faster with red dot than with irons, at least for me. And you should keep your both eyes open with red dot, which gives you better view of what's in front of you and allows faster multiple target acquisition.
Vasiliy

maxicon
07-01-2007, 10:06 AM
You want to ignore the iron sights completely. After it's sighted in, put the red dot on what you want to hit, and squeeze the trigger. Treat it more like a laser that's projecting onto your target.

As Vepr62 says, one of the big benefits of the red dot is shooting with both eyes open. As my eyesight gets worse, the iron sights get blurrier, and a red dot give me much more precision and accuracy.

The Ultradot Strikedot used to be the Hakko Tacpoint, which is a decent Aimpoint clone sight, and should work well on a rifle once you get used to it.

I have several of the original Ultradot sights, which are very popular in the bullseye world, and I shoot much better with them than with iron sights. They're target sights, though, and not tactical sights, so target aquisition is a bit slower than with bigger sights.

cho034442
07-01-2007, 11:44 AM
It seems that your red-dot scope is not parallax free, but you would have to shoot it and see. If the POI is always at where the red-dot is, no matter how your eye is lined up with the scope, then it is parallax free (this is a good thing).

Regarding how you would use the red-dot, it is really up to you. You can "cowitness" the iron with the scope or use the iron as backup. Check out this article http://www.rifleshootermag.com/gunsmithing/ar_092105 .

MedSpec65
07-01-2007, 8:36 PM
Mys BSA Red Dot scope mounted on my Buckmark .22LR pistol is paralax-free. Accurate and cheap.

M-1
07-01-2007, 8:55 PM
Can someone tell me if these red-dots are parallax free or not?

maxicon
07-02-2007, 9:56 AM
Some are more prone to parallax errors than others, but no red dot is parallax-free. How much parallax error it has at a given range depends on the optics design.

You can tell if yours is at the range you shoot at by propping up the rifle or sight on something sturdy, sighting on something precise (I print a 1" grid of lines with a reference dot in the center), then moving your head back and forth/up and down to see if the dot goes off the target, and how much.

Generally, parallax errors are pretty small, but it depends a lot on the range and the design.

Here are some articles that discuss it:
http://www.bullseyepistol.com/dotsight.htm
http://en.wikipedia.org/wiki/Red_dot_sight

and a variety of info on the Strikedot (also in its previous Tacpoint incarnation):
http://www.google.com/search?hl=en&q=parallax+strikedot
http://www.google.com/search?hl=en&q=parallax+tacpoint