Lee Steel Lee 90270 3 Die Set 357 Sig Steel

The Lee Steel 90270 3-Die Set for .357 Sig gives you a complete reloading solution for this popular defensive pistol cartridge without the premium price tag of carbide dies. Whether you're handloading ammunition for competition, training, or carry, this three-die set handles the core operations—sizing, expanding, and seating—with proven steel construction. Because steel dies require case lubricant during the sizing process, you'll want to keep a quality lube on hand, but the tradeoff is a solid, durable setup that works reliably for thousands of rounds.

This set delivers the essentials for reloading .357 Sig: a full-length sizing die to prepare fired brass, a powder-through expanding die that resizes and flares the case mouth in one stroke, and a bullet seating die for precise bullet placement. The included universal shell holder fits your press, and you'll get a powder dipper to help with charge weight starting points and the load data you need to begin safely. It's a straightforward, no-frills approach to reloading that appeals to shooters who want functional equipment without flashy features.

Lee has been the go-to name for budget-conscious reloaders for decades, and the Steel 3-Die Set carries that tradition. If you're new to handloading .357 Sig or you reload high volumes and want to keep consumable costs down, these dies are a smart choice. They'll give you consistent results and hold up to years of use if you treat them right—which mainly means using case lube and keeping them clean.

What's Included

• Full-length sizing die
• Powder-through expanding die
• Bullet seating die
• Universal shell holder
• Powder dipper
• Instructions and load data

Frequently Asked Questions

Can I use this .357 Sig reloading die set on any reloading press?

The Lee Steel 3-Die Set includes a universal shell holder, which fits Lee presses and most other single-stage and turret presses. Always verify that your press accepts a universal shell holder before purchasing.

Do I need case lube, and what's the difference between steel and carbide dies?

Yes, steel dies require a case lubricant during the sizing operation to prevent sticking and galling. Carbide dies don't require lube, which is convenient but comes at a higher cost. Steel dies are durable and reliable when used with proper lube, making them an economical choice for high-volume handloaders.

What's the difference between a powder-through die and a separate expanding die?

The powder-through expanding die in this set does double duty: it resizes the case and expands the case mouth to accept the bullet, all in one stroke. This streamlines the reloading process and is standard in Lee 3-die rifle and pistol sets.

Is load data included, or do I need to buy a manual?

Load data for .357 Sig is included with this set, so you can get started immediately. For more detailed information or alternative loads, a reloading manual is always a good reference, but the included data will get you going.