Number three

The third distinction claimed by the 6.5 RPM is really in the rifle. It has no extended “freebore.” Roy made sure bullets from his magnums left the gate faster than the competition. Giving bullets an easy start before they met the rifling kept pressures in check. Despite claims freebore can impair accuracy, Weatherby (and other) barrels so bored have turned in snug groups. In fact, Weatherby now guarantees all Mark V rifles to shoot into a minute of angle! But the RPM was designed without the freebore imperative.

“The 6.5 RPM enabled us to build magnum reach and power into an agile, lightweight rifle,” said Adam. He’s used the cartridge on hunts already, in a Weatherby Backcountry Ti — a six-lug Mark V tipping the scale an ounce shy of 5 lbs. A careful 425-yard shot with a 140-gr. AccuBond dropped a Montana black bear during the 2019 spring season. Come fall, Adam used the rifle and 6.5 RPM load to tag a mule deer buck in Wyoming. Later, in a new Carbonmark Elite rifle, this hot 6.5 added a pronghorn to its tally.

In my view the 140-gr. AccuBond is a superb bullet for the RPM — accurate, chalk-line flat in flight and with upset and penetration qualities making it suitable to game as big as elk. Keeping the barrels of 6.5 RPM rifles at 24, the crew at Weatherby’s Sheridan, Wyoming plant gave those bullets the launch they deserve. The length also throttles blast and puts the Mark V’s balance point where it belongs.