In my experience, very light loads in a revolver is always flirting with danger... however, that is not to say that you shouldn't do it. Simply -- know WHY and be very aware so that if/when you are faced with a PROBLEM, it can merely be a problem that is dealt with before it becomes a catastrophe.
The obvious issue is sticking a bullet. What is not always so obvious is WHY. In my opinion, the big wildcard is the flash gap which ends up as a pressure relief valve -- but not in a good or productive way. Especially on the low end, we very much need a minimum amount of pressure to ensure the bullet leaves the barrel and that flash gap gives that crucial pressure somewhere to escape. And that's how it causes us trouble.
And the lighter the bullet...
The less pressure, complicating things further.
The most important thing when going down the wormhole of "extremely light loads in revolvers" is, IMO, to use a lead bullet.
For two reasons that sound similar: the lead bullet is easier (FAR EASIER) to push down the barrel. This makes it less likely that you will stick one and it makes it FAR easier to remove if you do.
Perhaps obvious... but just as important (more?) in this game is ensuring that every shot you take shows you visually that a bullet left the barrel. What sounds elementary becomes horribly difficult depending on the conditions. A new or novice shooter? A crowded range with a lot of gunfire? That's like playing Russian Roulette.
Should you do this? Absolutely!
Just know going in that you, your shooter and your revolver are in a spot with some associated risks.
It's better for you to sink a LOT of time & care in to it long before you add a novice shooter in to the mix.