Hello The wagz
Congratulations on the Christining of your S&W Model 586. I would suggest that if you are going to shoot Alot of .38 Special ammo that you might want to be sure to CLEAN the bore and barrel prior to shooting any .357's. The reason for this is if the .38's are a lead type bullet , They will leave an amount of LEAD in the cylinder and Barrel. This is a shorter round that the .357 and when you fire the .357 it has to cut through the .38 lead when you fire it. I simply carry a Tornado brush and a ram rod with me if i plan to shoot much. It only takes a moment to clean the bore and cylinder and keep's the pressure down in the cylinder & Barrel by doing this. I handload so it is cheap for me, but you may find that Wal-Mart is a good source for Winchester ammo both in .38 & 357. Simply look for the white & Red boxes.I also would LOOK for someone that is experienced in Handloading that is willing to help you load your own. It is a easy process once shown and I learned from a 70 year old man. I had to promise him to NOT load for anyone else nor load at all unless we were together. He showed me the right way, and when I Got to where I knew what I was doing Practically GAVE me the press and all the stuff I still use today.I also get ALL my Brass from the ground while at the range and this too will save you money in the long run. There are plenty of older guy's that would like to show a new guy how to do this, and it also gives them some company as well.It is fun and not all that hard if you have a good experienced teacher. This also builds confidence and makes you feel proud when you are loading your own, and have a high ten ring score. Good luck, Be careful and have fun, Hammer It