When I was still "on the job", I carried a Model 60 in an ankle holster as a backup. It was (and still is) loaded with Buffalo Bore "Standard Pressure, Short Barrel, Low Flash, Heavy .38 Special". It's a 147 grain lead, semi wadcutter, hollow point at 850 fps.
Maybe a little pricey, but it's not a range round. I only shot them once a year during annul backup gun qualification.