I happened onto a fantastic deal on this LCR from Ky GunCo a few weeks back. Ive had three range sessions now, and feel like I can write an informed review.
The short story is, after about 650 rounds through it, its now my favorite concealed carry revolver. The holy grail I look for in a CCW is for it to be reliable, accurate, powerful, concealable and lightweight. The 9mm LCR is all those things, and it has now replaced my beloved, accurate S&W 637 as a daily carry.
I was already familiar with the LCR line, having owned the .38 Spl version until my girlfriend claimed it. The 9mm LCR is 4.5 oz heavier. The frame is stainless steel rather than aluminum, and the cylinder not as deeply fluted as the .38 version. It feels substantial and well-balanced. The weight absorbs recoil very well. I find the felt recoil to be less than that of the .38 LCR firing +P ammunition in both. Of course, as many others have written, the LCR trigger is better out of the box than any other snub on the market now.
In aimed fire, I could easily put Winchester 124g +P NATO rounds in the X and 10-ring of a 12x18 silhouette target at 7 yards, all day long. 124g +P is what Ill wind up carrying. Two brands of 124g shot to POA out to 10 yards. 115g shot a bit low - 1 to 1.5 at 7 yards - but the recoil was negligible. They grouped well for me. Standard velocity 115g rounds were like plinking ammunition. It was easy to dump the cylinder at full speed and bring it back on target quickly.
I had 2 brands of 147g and did not like either - they consistently shot high and right for me and didnt group well. I couldnt see any compelling reason to use these.
I also chronographed a few rounds from it. 10 rounds of 124g +P chronod 1075 from the LCR. 10 rounds of the same ammunition measured 1110 from a 3.42 Glock 26. In other words, the LCR gave up almost no velocity versus subcompact pistols. 124g hollowpoint at 1075 is not messing around.
I also tested for crimp jump, as the manual recommends, by marking my bullets with a carpenters pencil, ejecting the moon clip after 4 rounds, and examining the 5th round. I fired 7 different brands and 3 different weights of 9mm ammunition, including plenty of +P, and saw absolutely no evidence of crimp jump. I dont think this will be a concern with any commercial ammunition.