Generally, the stacked tips will supply 200, 250 and 300-gpm respectively. The problem is that rarely under combat conditions, does the nozzle crew remove the small 1-inch or 1-1/8-inch tip to flow more water if the situation warrants. A few years ago, I saw a photo of a large city department fighting a fully involved apartment fire with four hand lines in the street, each flowing the least amount of water they could because no one thought to remove the outer tips. Unfortunately, the photo was shot by the salesman who sold the department the nozzles, and he would not part with the image, which it why it does not accompany this blog.
The easy solution to the stacked tip quandary is to simply remove the two top tips and then plan your high-volume strategy around the 1-1/4-inch base tip.
The two top tips make dandy paperweights and will prove to visitors like me that you are certainly a progressive fire officer.