Here is a really good read. With some cool twists with pictures.
https://castboolits.gunloads.com/sh...from-40-S-amp-W-Brass-Using-7x57mm-Mauser-Die
If you have ever tumbler 40S&W ,9mm and 45ACP together you will find out those cases fit snugly inside of each other.
https://castboolits.gunloads.com/sh...from-40-S-amp-W-Brass-Using-7x57mm-Mauser-Die
If you have ever tumbler 40S&W ,9mm and 45ACP together you will find out those cases fit snugly inside of each other.