This is a little ways away from "357s" but here's how I do it and some may be useful for the .357s.
There are two almost mechanically-identical versions of the S&W 340. This is the titanium/scandium one called the "Air
lite," in .357.
http://picturearchive.gunauction.com/1912728/7534427/94db6eabc5cd39cf10593902cc1f9d20.jpgThe steel version is the "Air
weight" in +P 38 Special* and doesn't have the cutesy "atom" logo on it.
I have both, but carry the steel version, which I load with .38 +Ps.
I got Crimson Trace (CT) laser sight grips for it, and I found that holding it in two hands with it pressed close to the lower part of my rib cage is the way to go, for me. This way, the muzzle flash is below one's line of sight (I practice with the range lights off) and the fact that it's braced against my body affords excellent steadiness with that laser dot on the target. Holding it as if I were using the iron sights is discouraging because the laser emphasizes my wobble.
The trouble is the CT grips are not the same configuration as the factory grips and not as comfortable under recoil (again, even with .38s), and it throws the switch button out from under your middle finger when the gun does off and you have to re-settle the gun in your hands to turn on the laser again.
I halfway cured this problem by using a dab of RTV over the switch button, but after two cylinders full, the dab of RTV fell off. I then glued (with RTV) a stiff sponge rubber "button" made with a paper punch through an old mouse pad onto it, and so far, that seems to work.
That was one problem with the CT grips. The other problem was that when I mounted them on the gun, I had to carve some material off them in one spot to make them fit properly on the gun, and had to re-bend the battery clips to get the battery in.
I wrote to CT about that (with close-up photos of the problem) and got zero response. I was
extremely disappointed with them for
not responding.
Crimson Trace can sign onto this board and PM me if they want to apologize.
I was going to write to them about increasing the size of the laser button, but I decided that since Crimson Trace ignored my first letter regarding the modifications I had to make, the hell with them.
However, use of the laser (especially in dim light) and holding the gun with two hands down at the bottom of my rib cage seems to be "the way to go" with this gun, and it's my every day carry gun, either in a pants pocket (summer) or my coat pocket (winter).
Terry, 230RN
* They rate the gun as OK for +Ps, but note that the overhaul period will be shorter with a constant diet of +Ps.