Because of the vintage .45/70 rifles still in wide-spread use, commercial ammunition loaders are obliged to keep velocities ...

Phil Massaro tackles the 6mm ARC, a military cartridge that's equally at home in the hunting field.

There was also a plethora of black-powder lever-gun cartridges similar to the 45/70. Now there are only about five left standing that have any real support from ammunition or firearms manufacturers.

Why do some cartridges stick around, while others fade into obscurity? Phil Massaro delves into the topic, drawing on a ...