[lugerholsterrepair]

Dan, Even though your bore may be .358 this does not necessarily make your chamber large enough to accommodate the expanded case mouth. This could result in the casing pressing hard against the chamber wall and causing the bullet to stick in the chamber. Huge pressures could result and your pistol could become a grenade.

If this is something you are determined to do, I would suggest you plug the chamber and get an accurate idea of the exact demensions of the chamber area as well as the mouth of the bore. There are many members out there that put my knowledge of reloading to shame. I hope they chime in and give their opinions. Jerry Burney