Check out Lone Wolf, KKM, and Storm Lake barrels. A member of our site by the name of blackwolffcf can order them for you for a very reasonable price.
Since the .357 is a necked cartridge using a .40 casing, you'll be fine.biggs9599 said:Thank u all for your help. I found one on eBay for 125 which is fairly cheap but I don't know about using eBay. Also would I have to get a mag from a 31 or could I use my 40 mag since they are so close in size?