In classic Weatherby form, the 6.5 RPM is built for speed! That\u2019s the only classic Weatherby thing about this cartridge. RPM stands for rebated precision magnum \u2013 a dramatic departure from their traditional offerings. Maximizing the efficiency of 6.5mm bullets, as well as the entire Mark V 6-lug action, should it be more popular? We think so! Tune in to hear all about this modern-cartridge marvel.