WOW everyone's an expert, but few know what they talk about, so here's my take on this 38 super in a 357 mag revolver !
It depends on one thing only, will the round fit the revolver period.
As for safety, nobody in their right mind would tell you to try this, UNLESS you know what your about. This means can you do simple things like re-barrel a 1911 or hand-load your own ammo.
You might take a moment to consider this, how many revolvers are now chambered for +P 9mm & are they any different from their 357 brothers.
I have & still run 38 Super in my Ruger GP100, why because I can, should you,
here's my take on that, your an adult.