The 6.5 WBY RPM (Rebated Precision Magnum) is based on the lengthened version of the .284 Winchester. The large body diameter, low body taper, and 35-degree shoulder mean that case capacity is greatly increased, leading to higher velocities.
Bullet Diameter: .264 (6.5mm)
Common Reference: 6.5mm Caliber
Max Case Length: 2.57”
Production Start: 2019