Sounds great. I also do that kind of work. I'm sure you have read all the posts discussing the merits of the 480 Ruger, 460 S&W, and 500 S&W in the little 2.5" models. I would consider a 4" Model 629, but they are a bit heavy for regular carry in a holster. Me, I'd go with my 4" Model 57 (41 mag), but that is because I have one. I also have a 9.5" 480, but it is a beast as far as I'm concerned. It will probably rain a lot, so think stainless.