Are these Sellier & Bellot 7x57 Mauser cases compatible with standard Large Rifle primers?

Yes, these unprimed brass cases feature standard Boxer priming pockets designed to accept mainstream Large Rifle primers. They also conform to C.I.P. maximum case length specifications of 57.00 mm for straightforward handloading.

Can I use these 7x57mm Mauser cases in a break-action rifle chambered for 7x57R?

No, these cases are strictly built for rimless 7x57mm Mauser rifles and must not be used in firearms chambered for the rimmed 7x57R version. Using them in a 7x57R chamber can result in serious headspace and extraction issues.

What is the pressure rating for these S&B 7x57 Mauser brass cases?

These brass cases are manufactured to standard C.I.P. service limits with a maximum average pressure rating of 3,900 bar (approximately 56,500 psi). They are engineered for standard loads and are not rated for excessive over-pressure or +P wildcat loadings.

Are there any special delivery restrictions for ordering unprimed brass cases to Western Australia?

Yes, while unprimed brass contains no explosive material and is generally exempt from Dangerous Goods surcharges elsewhere, Western Australia classifies unprimed cartridge cases as controlled firearm components. In WA, they cannot be shipped via Australia Post and must be sent through authorized couriers to a licensed firearms dealer.

7x57 Brass Cases - Sellier & Bellot V337332

The Sellier & Bellot 7x57 Mauser Unprimed Brass Cases provide virgin, unprimed cartridge components designed for precision handloading. Manufactured in the Czech Republic from drawn cartridge brass, each case is built with uniform wall thickness and a standard Boxer primer pocket with a single central flash hole. Sized to C.I.P. dimensional specifications, these cases allow reloaders to assemble custom ammunition using standard Large Rifle Boxer primers and .284 in (7mm) projectiles across mainstream reloading die sets.

Key Features

Drawn Brass Construction: Formed for structural integrity and uniform case-wall thickness to support repeated reloading cycles.
Standard Boxer Primer Pocket: Machined with a single central flash hole compatible with standard Large Rifle Boxer primers for straightforward decapping and priming.
C.I.P. Standard Dimensions: Produced to a standardized maximum case length of 57.00 mm for reliable chambering in rimless 7x57mm chambers.
Component Compatibility: Accepts standard .284 in (7mm) diameter rifle projectiles using conventional sizing and seating dies.
Passive Mechanical Component: Non-powered, inert reloading brass containing no live propellant or internal priming compound.

Product Specifications

Calibre: 7x57mm Mauser (7mm Mauser / 7x57 Spanish Mauser rimless)
Case Length: 57.00 mm
Primer Pocket Type: Large Rifle Boxer
Compatible Projectile Diameter: .284 in (7mm)
Maximum Pressure Limit: 3,900 bar (approx. 56,500 psi) C.I.P. service limit
Quantity: 20 Pack
Pack Weight: Approximately 0.26 kg

Who is the S&B Sellier & Bellot 7x57 Mauser Unprimed Brass Cases 20 Pack for?

Handloaders reloading for vintage 7x57mm Mauser bolt-action rifles — Built to the standardized 57.00 mm case length specification, these 7x57 Mauser brass cases provide exact chamber compatibility and proper headspacing for historic military bolt platforms such as the Mauser 1893, 1895, and 1898.
Target shooters and hunters using modern sporting rifles chambered in 7x57mm Mauser — Engineered to operate within a 3,900 bar maximum service pressure limit, this 20 Pack of 7x57 Mauser brass cases delivers consistent case capacity for custom sporting loads targeting medium game or precision field shooting.

Less suitable for: Break-action rifles, combination guns, or drillings chambered for rimmed cartridges; firearms requiring an extracting rim must use dedicated 7x57R rimmed brass cases instead of this rimless design.

SKU	SAB42182LP
Model #	V337332
Brand	S&B
Shipping Weight	1.0000kg

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Sellier & Bellot V337332 Brass Cases 7x57 Mauser 20 Pack

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