Peterson .260 Remington LRP Brass Cases – 50 pcs

Peterson .260 Remington LRP brass is designed for shooters who demand repeatable dimensions, consistent internal capacity and reliable primer ignition. The cases feature standard Large Rifle Primer pockets and a 0.080" (approximately 2.03 mm) flash hole.

Each case is manufactured in the USA from high-quality C260 cartridge brass. The neck and shoulder are induction annealed during production to improve ductility and extend case life. The visible annealing marks are a normal result of this process and confirm that the brass has not been polished after annealing.

The .260 Remington combines a short-action-compatible case with efficient 6.5 mm bullets. Peterson Match-Grade brass is an excellent choice for precision rifle shooting, F-Class, PRS-style competition, long-range target shooting and carefully developed hunting loads.

Precision reloaders commonly praise Peterson brass for its consistent neck-wall thickness, uniform dimensions, tight primer pockets and durability over repeated reloading cycles. Users comparing Peterson .260 Remington brass with Lapua often describe both brands as being in the same premium-quality category, while noting that Peterson cases may have slightly thicker walls.

Key advantages

• Match-Grade quality for precision ammunition
• Large Rifle Primer pockets
• Standard 0.080" / 2.03 mm flash hole
• Manufactured from high-quality C260 cartridge brass
• Induction-annealed neck and shoulder
• Consistent case dimensions and internal capacity
• Uniform neck-wall thickness
• Strong, durable construction suitable for repeated reloading
• Tight and consistent primer pockets
• Reliable ignition, including in demanding weather conditions
• Manufactured entirely in the USA
• Supplied in a convenient box of 50 cases

Technical specifications

• Manufacturer: Peterson Cartridge
• Calibre: .260 Remington
• Product type: new, unprimed rifle brass cases
• Primer pocket: Large Rifle Primer – LRP
• Flash-hole diameter: 0.080" / approximately 2.03 mm
• Case type: rimless, bottleneck
• Material: C260 cartridge brass
• Neck and shoulder: induction annealed
• Quantity: 50 cases
• Manufacturer’s product code: 40008-R / 40008R
• UPC: 859449006001
• Country of manufacture: USA
• Quality class: Match-Grade

SAAMI cartridge and case dimensions

• Maximum case length: 2.035" / 51.69 mm
• Cartridge overall length: 2.530–2.800" / 64.26–71.12 mm
• Maximum case-head diameter: 0.473" / 12.01 mm
• Case-body diameter near the base: 0.4703" / 11.946 mm
• Shoulder diameter: 0.4553" / 11.565 mm
• Maximum outside neck diameter: 0.297" / 7.54 mm
• Bullet diameter: 0.2645" / 6.718 mm
• Shoulder angle: 20°

Peterson reference data – production lot N087

The following measurements were published by Peterson for reference lot N087, tested on 20 February 2024:

• Average empty case weight: 174.3 grains / approximately 11.29 g
• Average internal capacity: 53.2 grains of water / approximately 3.45 cm³
• Shoulder diameter: 0.451" / approximately 11.46 mm
• Base diameter: 0.469" / approximately 11.91 mm
• Neck-wall thickness: 0.0150" / approximately 0.381 mm
• Loaded neck diameter: 0.294" / approximately 7.47 mm
• AMP annealing code: 0156
• AMP pilot: No. 11

These values apply to the tested production lot and should be treated as reference data. Measurements may vary slightly between production lots.

Why choose the LRP version?

The Large Rifle Primer version is a proven option for shooters who prefer conventional primer systems and dependable ignition across a broad range of temperatures. LRP cases may be particularly attractive for hunting ammunition, cold-weather shooting and loads using slower-burning powders.

The final choice between LRP and SRP brass should depend on the rifle, firing-pin system, primer availability, powder selection and intended shooting conditions.

Important reloading information

Peterson brass may have thicker walls and a different internal capacity than cases made by other manufacturers. Changing the case brand or switching between SRP and LRP brass can alter pressure and velocity.

When changing brass, begin load development again using safe starting data from a current reloading manual. Always inspect, measure and prepare every case before use. Never exceed published SAAMI, CIP or powder-manufacturer limits.

The package contains empty, unprimed cartridge cases only. Primers, bullets, powder and loaded ammunition are not included.

Frequently asked questions

Are primers included?

No. These are new, unprimed cartridge cases. Large Rifle primers must be purchased separately.

What does LRP mean?

LRP stands for Large Rifle Primer. These cases use standard Large Rifle primer pockets.

What is the flash-hole diameter?

The LRP version uses a standard 0.080" flash hole, equivalent to approximately 2.03 mm.

Are the cases factory annealed?

Yes. Peterson induction-anneals the neck and shoulder during production. Visible heat discolouration is normal and is not a manufacturing defect.

How does Peterson brass compare with Lapua?

Both brands are widely regarded as premium choices for precision reloading. Users frequently praise Peterson brass for its dimensional consistency, uniform neck walls, durable primer pockets and long service life. Some reloaders report that Peterson .260 Remington cases have slightly thicker walls, which may reduce internal capacity compared with some competing cases.

Can I transfer an existing load from another brand of brass?

It is not recommended. Differences in wall thickness and internal volume can affect chamber pressure and muzzle velocity. Reduce the charge to an appropriate starting level and develop the load again according to current published data.