It is a good design. What model Smiths do you have? There is a small drawback with this bullet in the N frames. N frame .357 cylinders are short, so the 358429 has to be crimped on the front driving band rather than the crimp groove. You can get around that by using 38 cases, but I don't like doing that. M19/M66/M13's have a longer cylinder, so it is not an issue.