Why don't you sell them and buy appropriate sized bullets? I'm sure you could sell or trade them. They are made to a specific dimension for a reason. In case you didn't know 9mm is .355 .357/.38 is well .357. Your choice though....I have about 1000 115gr 9mm bullets that have a cannelure. I was thinking about loading some in 38 or 357. I assume I can use 125gr data?