Lee 90048 New Lube & Size Kit .358 Diameter Sizer Die|Punch|Case 7|8x14 Threads in.

The Lee Precision .358 Lube & Size Kit is a cast bullet sizing solution purpose-built for reloaders working with a single-stage press. If you're casting your own bullets for rifle cartridges like .358 Winchester or similar calibers, this kit streamlines the critical sizing and lubrication process—combining die, punch, and collection case into one integrated system that threads into your standard 7/8x14 press mount.

Cast bullets demand precision sizing to ensure consistent bore fit and accuracy. This kit handles that in one straightforward operation: you lubricate your cast bullets with liquid Alox, seat a gas check on the bullet base if you're using them, and push the bullet nose-first through the sizing die. As the bullet passes through, it's sized to .358 diameter while the gas check is simultaneously crimped and seated. There's no need for special nose punches or complex setups—the design accepts bullets nose-first and captures sized rounds in the included container for fast collection and sorting.

Built for hunters and precision rifle handloaders who cast their own projectiles, this kit eliminates the guesswork and tedium of sizing cast bullets by hand. The nose-first design means faster processing without fumbling with traditional punch systems. Keep in mind that this kit is engineered for single-stage presses only and does not include press or bullet lubricant (those are sourced separately). For best results, select this .358 sizing die if your cast bullets measure approximately .357" at the groove diameter, following Lee's standard practice of choosing a die .001" oversized.

Key Features

• Threads into any single-stage reloading press (7/8x14 standard mount)
• Nose-first bullet design eliminates need for specialized nose punches
• Automatically seats and crimps gas checks during sizing stroke
• Includes sizing die, push-through punch, and collection case
• Captures sized bullets for organized workflow and fast collection
• Sized specifically for .358 diameter cast bullets

Specifications

Frequently Asked Questions

Will this kit work with my progressive or turret press?

No—this kit is designed for single-stage presses only. The punch system and sizing operation are optimized for the linear stroke of a single-stage press.

Do I need to buy anything else to use this kit?

Yes. You'll need a single-stage reloading press (not included) and bullet lubricant—Lee recommends liquid Alox for this application. The kit includes the die, punch, and collection case.

What cast bullet size should I use with the .358 sizing die?

Select cast bullets that measure approximately .357" at the groove diameter. Lee's standard practice is to choose a sizing die .001" larger than your bullet's groove diameter, so the .358 die is ideal for .357" cast bullets.

Can I use this kit without gas checks?

Yes. The kit sizes cast bullets whether or not you use gas checks. If you do use them, they'll be seated and crimped automatically during the sizing stroke after you lubricate the bullet and place the gas check on the bullet's base.