Weatherby .338 WBY RPM 225gr Barnes TTSX — 20rd Box

Description

Introduced in 2022, the .338 WBY RPM (Rebated Precision Magnum) was developed to deliver magnum-class ballistics from a lightweight Mark V 6-lug action. The cartridge is based on the 6.5 RPM necked up to accept a .338-caliber projectile and is intended to provide high performance for backcountry big-game hunting applications. The case features a large body diameter, low body taper and a 35-degree shoulder to increase powder capacity and velocity. This Weatherby Select Plus load pairs the .338 RPM with a 225 gr Barnes TTSX projectile for controlled expansion and consistency.

Key Specifications

• Caliber: .338 WBY RPM.
• Bullet weight: 225 gr.
• Bullet type: Barnes TTSX.
• Rounds per box: 20 rounds.
• Advertised velocity: 2800 fps.
• Manufacturer: Weatherby.
• Introduced: 2022.
• Case design: large body diameter, low body taper, 35-degree shoulder.
• Design intent: optimized for magnum performance in lightweight backcountry rifles.

This Select Plus offering from Weatherby brings proven Barnes TTSX projectiles to the .338 WBY RPM platform, combining reliable construction with a case geometry designed for higher velocities. For shooters who need magnum performance from a compact, lightweight action, this load provides a balanced option for serious field use.

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