I believe that there are already lots of good ideas about good SD loads and they have been mentioned already. I jusy wanted to agree with Daryl in Az, he gave you some excellent advice (in my opinion). I am a reloader. It is a great hobby, you can save a huge amount of money, too. The only calibers I have ever reloaded for are .45 ACP and 9mm. I need to buy a conversion kit for my reloading machine and some dies in .38. I have a new model 442 and somehow got lucky enough to get a brand new one without one of those danged locks. If you really want to be a really good shot, you have to shoot a lot. That is just my opinion, but to shoot a lot these days you have to either have a trust fund or be a reloader
Good luck with your 442.