I've been shooting 3" bb's and 2's out of my over and under with modified and improved modified factory chokes. I've also been shooting 3 1/2" bb's and 2's out of my Browning gold with a factory modified choke. The modified choke with Blackcloud 3 1/2" number 2's is the best combinationI've ever shot for geese in all of the years I've been hunting.(excluding super expensive stuff like bismuth) I've shot probably a total of 10 boxes of Blackcloud so far with no problems, and devestating results in the kill department! I'm gonna keep shooting it. If there is a real threat Federeal will have a recall.