Decide on what bullet you want to shoot and then start working on the range. Start at 90 grains of BlackHorn and start shooting groups. Work the load up to a point that either the accuracy falls off, your shoulder falls off from the recoil, or you reached the max you rifle can handle. Some where in all that testing will be a very tight group for that bullet and your rifle using a max powder charge. That would be the load I use.