I believe the 3" guns should be marked with two stars above the PSF. 2.75" chambered guns are USUALLY marked with one star above the PSF but I have seen 2.75" chambered guns with the double star. I also believe my 3" chambered, Stoeger-imported Gamecock Deluxe in 20 gauge is marked on the ejector with "75" as well. I hope that helps...