Jim,

That would be an interesting short range bullet. I normally load 9.3x72 with 4198 but that may be too slow for such a light bullet (93 to 95 gr).

Some people use light loads of shotgun powder for squib loads and for target shooting.

The followig is what I would do if developing a light load for a 9.3x72r.

I would start with 9.0 gr of Unique. I base that on seeing an Alliant loading manual load of 9.6 gr with a 125 gr bullet for a 357 S&W Mag. Your case is significantly larger and the bullet much lighter.

Another powder would be H110 which Hodgdon list a load of 15.0 gr pushing a 105 gr bullet in a 357 mag case for a pressure of 22,800 psi. Again your case is significantly larger than the 357 mag.

For very light loads, I sometimes put a 1/2" square piece of tissue on top of the powder, just to hold it in place.

Maybe some others have other crecommendations