I just picked these up in a big purchase and have no use for them. There are three boxes of 20rds except one box is missing seven rounds. So a total of 53rds. The boxes are all the same and are Samson Ultra. They are marked 50 Action express 300GR. Jacketed Soft Point. I know nothing about them, but I know what they are worth. Make an offer, or I would like to trade for some .223, .45, .40, or 9mm. Feel free to ask me questions.