Just got back from shooting my new 640 (concealed hammer) for the first time and am extremely pleased. I shot 130 grain fmj .38's and Winchester 158 grain +P LSWCHP (very dirty). I was amazed at the accuracy and the smooth trigger, very easy to keep all rounds in tight little groups at 10 yards. Recoil was negligible, expecially compared to my Airweight model 37. This will be my new concealed carry gun. I also took along my NAA Guardian .32 which I hadn't shot in quite some time and put 50 rounds of Winchester Silvertips through it along with 6 rounds of Federal Hydra-Shoks and it didn't miss a beat. Just thought I would post these comments in case any of you are considering a 640 or a Guardian. I focused on the 640 naturally, being a new gun, but thought I would throw in the comments on the Guardian as well. Mike