I have both 4 ¼" and 2 ¾" versions. Bought one of the first 4 ¼" avail in early 2014 and added the 2 ¾" several month ago. Both are equipped with the S&W Hogue 500 X Frame grips which I have on all my recent round butt K, L, & N frame S&Ws. With the Hogue grips, I find the recoil of the 4 ¼", with heavy loads, to be a slightly less than a 4" N Frame Mountain Gun. For me, the 2 ¾" gun's recoil is a bit less than the 4 ¼" with equal loads (my guess is that is due to approx. 100 fps less velocity thru the shorter tube).
As mentioned above by BLUEDOT37, the little snubbie is amazingly easy to shoot and my sample is quite accurate. As far as durability goes, one of my 4 ¼" guns has 5,700+ rounds down the pipe (1/3 magnum level loads) and is still going strong. I could live happily with either barrel length, but think the 4 ¼" is a bit more versatile and the added sight radius is helpful.
I live and recreate pretty much daily in moose, bear, cougar and wolf country. My predominant all day everyday carry gun is the 4 ¼" M69. The L Frame .44 Mag fits my needs perfectly and has relegated my other .44s to occasional range use.
Here are some chronograph results for both the 2 ¾" and 4 ¼" guns.
Chronoed these from the 2.75" M69. Three rounds at 5 Long paces from muzzle and 68 deg F. Larger sample could change the results a bit. Largest ES was 42 fps.
260 WFNGC w/23.0gr H110 avg 1,125 fps
240 Zero JSP with 23.5gr H110 avg 1,126 fps
240gr Fed Factory avg 1,125 fps
265gr CSWCGC (Lyman Thompson) with 17.5gr A2400 (Deep Seat) 1,119 fps avg
325gr WLNGC (BTB) with 22.0gr H110 avg 1,104 fps
For comparison purposes these were shot a while back from my 4 ¼" M69: Same temp, distance from the muzzle.
260 WFNGC w/23.0gr H110 avg 1,224 fps
240 Zero JSP with 23.5gr H110 avg 1,230 fps
240gr Fed Factory avg 1,220 fps
265gr CSWCGC (Lyman Thompson) with 17.5gr A2400 (deep seat) 1,140 fps avg
325gr WLNGC (BTB) with 22.0gr H110 avg 1,182
Some additional information on the different ball detent(s):
New front lockup on 2 ¾" (vs orig M69 4 ¼"). Ball detent is on the frame and locks up on/in back of crane/yoke (don't know exact config as I haven't disassembled cyl/yoke assy yet). Not sure why S&W hasn't identified this as a dash 1 (engineering change).
Orig M69 (4 ¼") front lockup. Ball detent on front of crane/yoke that locks into a v notch on the rear of the ejector shroud.
I can't find any incidence of the much criticized (mostly early on due to newness) ball detent being a problem. Nothing on any of the forums in over 3 ½ years, and it would have been a definite topic for discussion/criticism.
I think you've made a geat choice – hope it works for you as well as it has for me.
Hadn't planned on getting so wordy, but the M69 brings it out in me.
Thanks for your service.
Paul