Hi D. Boone,
Don't forget either, that there are lots of these wonderful S&W .45ACP revolvers that show up on the used market. The best thing about them is that they do not have the much-hated "Internal Lock" of those made in the past seven years or so.
Thus, my recommendations would be:
Long barrel ones . . .
1. Model 1955 (Model 25-2) - These were blued target revolvers. Most had 6" barrels and some came with 6 1/2" barrels. These can be real tack drivers when the shooter dials in the perfect load for it!
2. Model 625 (Model of 1989) - These are the typical stainless steel-looking ones. The longest barrel is the very popular 5" one. These are extremely accurate guns. If you love the full-lugged barrels you'll like this one. If you shoot in competitions, avoid the slightly earlier 625 models inscribed "Model of 1988."
Short barrel ones . . .
1. Model 625 (Model of 1989) - Less 3" and 4" versions of these were made than the 5" versions . . . at least until IDPA rules changes caused folks to have to give up their 5" ones for the 4" versions. The 3" version is a super-cool N frame "snubbie" that has amazing accuracy in skilled hands.
2. Model 25-2 snubbies - No, S&W did NOT make the beloved 25-2 in shorter barrel versions. THEIR MISTAKE!
LOTS of fine gunsmiths back in the '60's-mid '80s took care of this demand by converting the target revolvers into what savvy shooters understood was S&W's ultimate combat revolver . . . a short barreled .45ACP revolver using moonclips!
The most known ones were converted by Jovino's Gun Shop in NYC. They shortened the barrels to 3" and converted the square grip into a round one that was the same grip size as a K-frame round butt! Jovinos are prized today.
Mine, pictured below, was converted in Savannah by a now deceased master wheelgun smith. It sports the slickest double and single action pull one will ever experience, and a 3 1/4" barrel length which, IMHO is so close to that classic 3 1/2" barrel of the famous Model 27. This is my favorite handgun of any type.
BTW, I shot lots of pin matches with my 625 w/5" barrel. GREAT GUN! I've since traded it off for some other momentary gun lust, but will someday replace it with another pre-lock 625.
I'd rather have the one below than any 3" 625. BTW, S&W made a "classic" version of this last year with a 3" barrel. Look around and you can find 'em:
Hope this helps,
T.