They are Winchesters international load. 24 grams is basically 7/8 oz. but just a tad under. Not enough to notice though. They run 1325 FPS. They are legal to use on ATA targets since the velocity is below the 1350 FPS mandated as maximum for 7/8 oz. and under in the rule book. I have seen a few shooters shooting them. Mostly younger shooters. They break targets and have fairly low recoil.Has anyone shot the Winchester AANL127 shells ( 3 1/4 dram, 24 gram)? I recently bought a couple flats at a great price. A Google search shows these are 7/8 ounce shells.