I have the short, boot-type Crimson Trace laser grip on the 342PD, as well as on a standard S&W 640 and a 640-2 (the batch that was made for NYPD Detectives, basically a .38 on a .357 mag 640 j-frame; gun is a tad bigger, barrel a bit longer). Don't have any problem shooting +P out of the steel...