For hunting I start with the bullet I'm going to be using for the game that I will be harvesting. I usually use Noslar partitions or Sierra game kings. I would then look at the balistic charts for a couple of different powders. I start about 10% off of max. load and work up. when I find the load that is grouping well, I still will continue up a couple more steps just to see the performance. If no better than the one I liked then I would go back to that charge and try a few more. This seems as if it takes a long time but it really doesn't and this system has seemed to work for me. Best of luck finding the right load for your gun.