The SAAMI specification for .38 Special jacketed bullet diameter allows 0.355”. Look it up. Even as a worst case, a maximum tolerance SAAMI .38 Special bore (land) diameter (0.350”) will provide 0.005” engagement for a 0.355” bullet. And at best, a 0.009” engagement. Years ago I came into a very good deal on 1000 130 grain .38 Super FMJ bullets. Many of them found their way into .38 Special cases, no ill effects resulted as I remember.