Another fan of 38 Super. I shot a custom 38 Super race gun in IPSC for years and grew to love the versatility and accuracy of the cartridge. I got out of IPSC it still have 2 supers. One is a Colt XSE LW commander and the other, many favorite, a Kimber Eclipse Target. The Eclipse has a supported chamber so it will handle hot loads. I had about a thousand rounds of major loads left from my IPSC days and needed something to shoot them in and discovered the Kimber. I made a call to Kimber to see if they thought the gun would be ok to shoot them in and they said there was no problem.
My loads were pushing a 125gr jacketed bullet around 1400fps so I increased the recoil spring to 20# and placed a shock buffer in it. The frame is steel which is a big plus too. Hot loads can be hard on guns especially alloy frames. My race gun had a Caspian high capacity frame what was alloy. Granted I ran tens of thousands of hot rounds through it and always ran a shock buffer but eventually the frame cracked. I'm not shooting the volume of hot loads but want to make sure I don't damage the frames on these.
If you shoot much 38 super you really need to load your own. That's the only way you'll enjoy the versatility and accuracy of the cartridge. If you do load and want to shoot hot loads I'd strongly recommend a supported chamber barrel with a heavier recoil spring and shock buffer.