I've got some questions on my smith. It's a 44 mag model 29-5. It's blued and takes 6 rounds. It looks like its got pacmere (sp?) grips and the serial # is either 8HY8xxx or BHY8xxx I can't make out the first digit real well. there is also a 143 stamped on the "arm". I want to replace the grips with some houge soft rubber grips and wanted to know how to tell if the gun is round butt or square. I assume it is an N frame, correct me if I'm wrong. Any info. you have is greatly appreciated.