Was looking for something else and found your question.

I have been shooting the Sidekick for a few years now and have harvested many deer with it. The choice of bullets and powder is up to you. It will shoot anything you put in it and shoot them very well. I like to load mine with the 300 gr. XTP and 110 grs. of Pyrodex Select.

But like I said go to the range and kick back and have a ball running different bullets and powders and come to a happy conclusion.