Mark, Leinster Lad did nothing wrong other then point out that this topic has been discussed on here a lot of times. I know he did not mean to offend you. He had NO way of knowing what all you researched prior to asking your questions at all. Most of us on here use the CCI SV ammo as it works so well in our M41's. And yes you can get a bad batch of that on rare occasions. It has happened to me as well.