Granted, this is only a piece of the puzzle and certainly not the biggest piece, because any formula makes good bullets and bad look the same on paper.

But on the other hand, you wouldn't shoot a 50 gr bullet out of a muzzleloader and expect good results. Where to draw the line on bullet size and speed is one thing this formula helps determine.

If you do some research on Mr. Taylor, he has pretty good credentials to give some advice in this area.