Starline 357 Mag Brass


New, Unprimed, Small Magnum Pistol 357 Magnum Brass
SKU: 1300 Categories: , ,

Starline 357 Mag Brass

Starline 357 Mag Brass starts with consistent metallurgy, precise tooling, tight quality control, and 30 plus years of experience. Starline guarantees 100% of their 357 Mag brass to have flash hole presence and of the correct length and diameter. Also, Starline vertically draws their brass to minimize variation in wall thickness.

Starline tests their 357 Mag brass at elevated pressures for heavy Magnum loads for use in adequate firearms. Additionally, Starline recommends annealing the mouth when loading with black powder to create a proper seal. Starline manufactures their 357 Mag brass to withstand high-pressure loads associated with smokeless hunting loads; since the only way to make brass harder is to work the material, Starline leaves them stiffer so you can anneal for your specific application.  Starline’s annealing procedures can be viewed in section #4 of their FAQ.

When it comes to selecting the best in 357 Mag brass, choose Starline for your reloading needs. If you’re needing projectiles, don’t forget to view our selection of pistol bullets. Since most pistol shooters look for a great low-cost bullet, check out our selection of Berry’s Bullets.  Also, we carry a large selection of once-fired brass.

Technical Information

Manufacturer: Starline
Caliber: 357 Magnum | 357 Mag
Primer: Small, Unprimed
OAL: 1.275″ – 1.285″


* This is NOT loaded or primed ammunition *

Weight 1 oz
Dimensions N/A

357 Mag, 38 Caliber





Component Type


Brass Type

New Brass

Primer Size

Large Rifle Benchrest

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