same weight of boat tail, spire, softpoint, or fmj and it wont matter. The manufactures don't test every brand of bullet made, but as long as it is the same gr. then you will be fine. Start at the low end of the data scale and work up a load that is right for you and your gun. Just never go lower than what the book tells you, as underloading a rifle shell is more dangerous than overloading it.