Looking to optimize a J-frame carry gun and was wondering if you felt the Smith and Wesson 940 9mm has much over a 640-1 with 38 +P Gold Dot short barrel rounds. Much velocity will be lost with the sub 2" barrel of the 940 which would attenuate the performance of a 9mm so I can imagine it really can't be much more effective than the GDSB. I do wish to stay away from 357 loads, unless you could recommend a "light" 357 round. Thoughts? Thanks.