While I understand that the OP shoots single-action with his J-Frame, I am reading where many comments are, or at least seem to be, discussing using the J-Frame as a SD gun. As that appears to be the case, shouldn't we all be talking about shooting DA instead?
FWIW, I have a 2in 642 and 2in K6S that are DA-only, and I don't get anything near what many of the posters are saying as far as accuracy. Sure,... I know that that may just be my "personal" problem, but I have a hard time believing that anyone in a SD situation will be shooting SA. Any DA accuracy feed-back posts would be appreciated...