Are you concerned aobut looks or function?
Functionally, the gas cutting typically seems to go so far and then stop. Of course, if you shoot light-bullet full-power .357 loads a lot, you can cut it deep enough to matter.
My favorite load for my 65 is a 135gr Gold Dot over a near-max load of HP38 in a .357 case. This is my version of the short barrel load.
Of course for target practice, you can shoot +P 158gr .38 loads forever with no worry. I use 158gr Berry loaded to about 820 fps.