Agree Bronko. I've had very mixed results with them. After my last outing with 300 grain .54 caliber REALS in my Great Plains I came to the conclusion that the quality of the casting may also play a big part. Some of the ones I had loaded very easily with little or no cutting of the driving bands. Some cut just the top band. And some cut the top and second band. I suspect a little weighing, measuring and sorting would have improved my results greatly. (It's on my to do list.)