How is is that Harlan C. can use the light pipe on his gun? Probably the hottest shooter on the circuit today.I think it depends on several things concerning how we use our vision skills when talking about end beads.
If one understands the purpose of the bead it is easier to make a decision about which one is right for YOU.
The bead isn't a sight and it isn't there for you to look at or line up with the target. It is to be "seen" by the eyes as they focus ON THE TARGET. The eyes will see the bead even as you focus on the target, and your brain will receive subliminal level information about muzzle location vs target location. So we want our eyes to see the bead so we can provide or mind with useful data about muzzle location, without looking at the bead. This means a bead color and size that your eyes can perceive, but not so big or bright that it defeats it's own purpose and draws the eyes to look back at it.
I like a small red light pipe. The green is to attractive to my eyes.
People who arbitrarily and capriciously claim that fiberoptic beads are worthless, useless, not the way to go, etc., apparently are quite ignorant that there are some of us that need these devices in order to use both eyes for shooting. The Uni-Dot in particular is a very useful tool for those of us who have issues with crossfiring. These same people also say you don't need a bead at all or even a rib. I'll believe that when I see trapshooters with K and P guns with round, ribless and beadless, barrels.
If you have crossfiring problems, ignore their ignorance and give a 2mm Uni-Dot a try. Realize it's going to take a month or two to get used to it, and your scores may drop until you practice enough. Those who try it for one round then declare it's useless are foolish. One key point is that you never look directly at the bead. You keep your eyes on the clay at all times and use peripheral vision to bring the dot to the clay. Your shooting eye will pick up the bead well enough without looking directly at it. If you look directly at the bead you will miss.
Keep in mind the Uni-Dot uses a tube to prevent the non-firing eye from seeing the bead. Regular fiberoptic beads do not prevent this.
If you don't have a crossfiring problem, that lessens the argument for fiberoptic sights. However, I find the bright bead useful under the lights at night shoots. And I especially like the bright bead when hunting.
"Keep in mind the Uni-Dot uses a tube to prevent the non-firing eye from seeing the bead. Regular fiberoptic beads do not prevent this."
The only problem is that will not prevent the non firing eye to see the barrel which in case of eye cross dominance is vital!
The only thing the Fluorescent beads are doing is to switch the shooting eye to the barrel.In case of eye cross dominance is mandatory to watch the beat in order to trick the eye! Is good for rifle and pistol shooting where you aim but not so good for shotgunning where you point the gun!
How a shooter uses whatever type of bead is up to them.
I do like light pipes for the front sight of my action pistols - very fast and accurate. I could see how some shotgunners could benefit from using a similar set up on the end of their trap gun - but it isn't the best for me, I use a white bradley darkened out with a black sharpie.