Does anyone really carry concealed an N Frame Gun?
Yes, I'm nuts enough to do it
.
I carry a 4" S&W Model 28 using a Lobo Gunleather IWB holster and a 1.5" beltman bullhide belt. The gunbelt makes all the difference; quality gear is a must with a gun as beefalicious as an N Frame S&W. I do have to dress around the gun a bit (pants a little big in the waste, baggy shirt with a print). With those caveats, an N frame conceals surprisingly well for its size. It does take some experimentation to find the sweet spot (I find 2:30 works best for me) and it will never be as invisible comfort-wise as a K Frame IWB (to me), but it is definitely doable. Not as an EDC though.
Webly, good post. I too would recommend a K Frame S&W. If the OP is interested in IWB carry, with a good belt and holster a K Frame is nearly as easy to carry and conceal as the smaller J Frame, but the K Frame is a generally going to be easier to shoot well for all but the most small fingered individuals, and you get the bonus of a 6th shot.
dyl is also correct. With IWB carry (unlike pocket or ankle carry), barrel length is less important up to a point. I have little trouble with IWB carry of 4" revolvers and 5" autos. However, I still carry a 2.5" S&W 66 .357 at times, simply because the round butt frame with S&W walnut service stocks (plus Tyler T Grip) disappear, even with a fairly tight fitting T Shirt (when it does print, it looks like a cell phone).
Here are a few pics of some S&W K Frame .357s to get you going
...
S&W Model 13 3" (fixed sights)
S&W Model 19 4" (adjustable sights)
S&W Model 66 2.5" (adjustable sights)
The aforementioned Model 65 is basically the same gun as the Model 13 above, except it is stainless steel.
BTW, the 2.5" 686 you are considering would be doable as well. It isn't much larger than a K Frame. But as always, it will require a good stiff gun belt and a quality holster (kydex or leather, though I prefer leather) to pull it off.