I know of a loading that runs 'Unique' powder (6 to 6.5gr) under a 115gr lead bullet and it reportedly functions the action.
For 'pinking', you will want the load to be safe and functional and cheap. I feel that these goals can be achieved with more conventional powders and a lot simpler. Look into cast lead loads.
I would be concerned with plugging up the gas port with bits of lead...a condition that would end up being quite difficult to later clean or correct.
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