Paired with the right bipod and scope, the Backcountry Ti is a sub-7-pound rig. (Bill Buckley/)
For the last 75 years, it’s been easy to recognize a Weatherby cartridge. The distinctive double-radiused shoulder is a dead giveaway, as is the proportion of brass (a lot) to bullet. If you had to triple-check, you could look for the belt on the case. Everything from the .224 Weatherby to the .460 Weatherby adhered to this formula. Until now.
With the introduction of the 6.5 RPM, Weatherby has updated its playbook. In keeping with the principles of modern cartridge design, the 6.5 RPM is a beltless cartridge, with a steep shoulder angle (35 degrees), minimal body taper, and a throat diameter that is just .001 inch over bullet diameter (.265 inch versus .264 inch).
This puts it in the same class as the 6.5 Creedmoor, 6.5 PRC, 22 Nosler, and other cartridges of recent vintage that are known for their accuracy. But it wouldn’t be a Weatherby unless it delivered a bit more horsepower, and that’s where the 6.5 RPM distinguishes itself.
The 6.5 RPM has a rebated rim that fits a standard .308 bolt face (.470 inch), but the case itself is .500 inch across to make room for more powder. (RPM stands for Rebated Precision Magnum.) So, it isn’t a surprise that it launches bullets at barrel-blistering speeds. My chronograph recorded an average muzzle velocity of 3093 fps with Hornady’s 143-grain ELD-X bullets, making it a flat-shooting SOB.
A trio of 6.5 Weatherby RPM rounds ready for action. (Bill Buckley/)
Mountain Bred

































































