I went shooting with the retired fireman on Monday. He ran out of ammo for his .45 and I had plenty since I forgot to pack my 1911. He replaced the box today (the kind of gesture common to desirable friends) with Federal 230 gr ball, brass case like I always preach about. I haven't bought ammo in a dozen years as I laid in a large stash with a 4 figure $ bonus check late in my pharma career. Looking at the packaging there is a warning on the side "Do not use in firearms with ported barrels or ported recoil compensators." This is equal to standard ball ammo including the ballistics info. The only difference I can see is smaller primers. So what is the problem? Is the powder toxic now? Have "they" succeeded in adding "taggants" to identify what manufacturer made the powder, ostensibly to solve crimes? Does it now have a blinding flash? I know I should not be so curious about things that really don't affect my life. I should know better than ask questions, but at 65 I'm more curious about stuff than I was 40 years ago. Joe