Brenneke Maximum Penetration Barrier Magnum is still "soft" - better than most slugs but still way below the Dixie DGS hard cast. According to Brenneke:
"Weight: 1 ⅜ oz.
Game: Law Enforcement
Barrel: Rifled or smoothbore
Range: 100 yards +"
Anything you can safely swage through a full choke is "soft."