I have a Beretta 410 sxs that I had the barrels opened to .008" and .015" I'm very happy with the results with load selection the .008" barrel shoots from 50% to 60% and the .015" shoots from 60% to 70% all I needed to do was a little pattern testing and now know what shell does what in my gun so when I use it on sporting clays I have a IC & Mod gun or Half and Full just by using different loads