This Lube Less Mighty Armory TNT GOLD MATCH Die will size to spec a .356 to .357 bullet diameter for the 38 and 357 Magnum.
The TNT "Tighter Neck Tension" design will allow you to adjust the die for bullet diameter and length. After a 4 minute setup you're good to go. Perfectly sized rounds in spec saami with the correct bullet tension. You can load to powder data spec and expect proper case pressures, cleaner burning powder, better accuracy and your brass will last longer for more reloads. Chronographs will prove SDs will be single digits. Now you can load your rounds to spec with every lever pull. Set your flare/bell to .+- Taper Crimp to . Results will be better than factory sized loads!