Our Swage Rod Backer/Case Mouth Expander is made from D-2 tool steel, then through hardened, not case hardened, to Rockwell 58-60C for maximum life.
Will also dead lock the press when it comes across one of those pesky 9mm cases with the interior step.
Expands case mouth to ~0.3575″
Bullets tested below sit squarely, and have a “suction pop” sound when pulled out by hand.
Also functions as swage backing rod for 9mm Luger.
Tested with 9mm (0.355″/0.356″) projectiles from:
Rocky Mountain Reloading (RMR)
Bayou Bullets (Donnie Miculek, brother of Jerry)
Required but not included:
Dillon Swage Backup Die Body p/n 12184
Dillon 9/16×18 Lock nut p/n 13483