^
I got interested in laser sights when I noticed that I could not see iron sights as well as when I was younger and my targets were getting pretty shotgunny.
The biggest problem people have with the laser is that the dancing dot emphasizes your natural wobble in aiming. You wobble the same with the iron sights, but it isn't as noticeable. This is quite discouraging when you first try it out.
Another problem that occurs is that in bright daylight, the dot is hard to see. In this case, you revert to the iron sights.
Most people in defensive practice will assume either the Weaver stance or the isoceles stance, with the gun held out way forward --as much as two or three feet.
I now stand slightly clockwise and hold the gun in two hands down by the bottom of my rib cage just below my <ahem> "strong nipple", pressed tightly against my body, with my off forearm pressed into my belly. This greatly reduces the wobble as well as reducing the recoil felt by your hands. This also shields your own COM a little better than a straight-on stance.
In addition, in low light situations, the muzzle flash is well below your line of sight and doesn't blind you for that critical little time for re-acquiring the sighting, as it would with using the iron sights. (I mostly practice at my indoor range with the lights off.)
I use a trigger technique I adopted while shooting high power competition which works for some but not others. The usual rule is to gradually squeeze the trigger until the letoff "surprises" you and to stop queezing if the sight picture drifts away, then start squeezing again when the sighting is right until the gun fires.
I do not do this. What I do is know when the trigger will let off, and pull it (yes, pull it) just before the sight picture crosses the center of the target again. You have to try this a couple of times yourself to know if it will work for you, and you need a decent trigger in the first place, and you have to know that trigger well. This is similar to the trigger slap that shotgunners use.
Adopting this concept to using the laser sights, it is very easy to judge just when the dot will cross the target again while it's dancing around... about ten inches or a foot (for me) at ten or fifteen yards. (As I mentioned, I don't even practice at 25 yards any more.)
My first laser was mounted on a .45 1911, and I thought I'd get punched in the belly with the slide, but for some reason, I only felt it once, and had a slight grease mark on my shirt from it. I guess I unconsciously re-adjusted my hand to avoid this. I was frankly a little worried that if the slide were stopped by my body, it might cause a failure to extract or feed, but it didn't happen. It doesn't happen at all with my smaller Kahr CW-9 in 9mm.
With revolvers, of course, there's no danger there, and there doesn't seem to be a danger from the cylinder gap blast, at least not with my little J-frame with +P 38s in it.
There are some disadvantages to the laser sights, such as not being able to acquire the dot if there's nothing behind the target, and of course, battery life. I blip the sights before venturing out to make sure they're working, and with some holsters, the holster material may push the button and keep the sight on while you're not aware of it, thereby running the battery down. And with my J-Frame, the first shot used to shift the gun in my hand so my finger slipped off the button, so I put a blob of RTV on it to enlarge the button a bit. (This does not happen with the .45.)
Another slight disadvantage, depending on the range, is that since you are shooting from a low gun position at slightly upward angles, the shots may go over the berm or into the ceiling on an indoor range. Adjust your paper target lower, accordingly.
As I say, I started messing with laser sights because it was getting hard to see the irons with advancing age and I now have three PDWs (Personal Defense Weapons) with lasers mounted.
The first time I aimed it in the house after I'd installed it, I was pretty discouraged about that wobble in the Weaver Stance, but then I realized, I wasn't wobbling any more than with iron sights and ultimately developed the above-described "belly stance" and trigger control method.
Maybe it just works for me... I can't know that for sure.
Another advantage to it, at least theoretically, is that it is harder for somebody to disarm you with one of those Chuck Norris roundhouse kicks or other means since the gun is held tightly to the body.
All I can say is try it and let me know how you like it.
For myself, in my situation and with my three laser-sighted guns, it seems to work pretty well... at least at the range.
Terry, 230RN
"Damn, there's always one flyer!" Five shots, J-frame, 15 yards, laser in belly stance: