Before you get too wrapped up in getting the oversized 360-360 bullets, drive a slightly oversized soft lead slug through your barrel and measure it. Most modern 38 S&Ws are barreled the same as the 38 special/357 mag, and will shoot 357-358 slugs just fine. DWalt above has written extensively about these loads. I have been loading the 38 S&W for years, and use 158 gr lead Semi Wadcutters (I just happen to have thousands of them on the shelf). They shoot just fine. I don't like to give powder charges on line, but I mostly use Bullseye.

Some of the much older 38S&W guns may actually have the larger bore, so I recommend checking what you actually have. I have at least half a dozen guns in this caliber, including a "Lemon Squeezer" from 1887. A Colt Bankers Special, Smith Regulation Police, and two Terriors, also have a British Webley.

Great little cartridge.

Best Regards, Les

__________________
SWCA 3084, SWHF 495, PGCA 3064