The steel 3-die set work fine when using a quality controlled source of brass, like cases fired only in your gun. More care is required when adjusting the bullet seat and crimp die, as seating and crimping occur simultaneously. Bullet diameter control is important when not using the factory crimp. Lee 357 Sig Pistol 3-Die Set includes Steel Full Length Sizing Die, Bullet Seating Die, Powder Thru Expanding Die, Universal Shell Holder, Powder Dipper and Instructions/Load Data.

Features:

• Powder through expanding die - notice case neck is expanded and flared with a hollow plug, this allows simultaneous charging with auto-disk powder measure or dipper
• Hardened steel shell holder
• Powder measure and charge table