I have a Beretta PX 4 Storm rifle in 40 caliber and I was just thinking of trying to shoot it in a PCC match. So my first question is this particular rifle in 40 cal allowed. Second I was just at a big gun show in Milwaukee and someone told me that you can use a Beretta 92FS, Cx4 Storm 9mm 30-Round Steel Magazine you just have to swap out the followers with ones from a 40 cal pistol mag. Anyone familiar or have any knowledge if that is true. He said the tube is the same size and no need to adjust the feed lips either.