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25 mar 2020 · The 6.5 WBY RPM cartridge was designed for a new, sub-five-pound mountain rifle built on a titanium version of the company’s slender six-lug Mark V action. Titanium is another first for Weatherby.
The first major departure from the classic Weatherby design was the 6.5 Weatherby Rebated Precision Magnum (often abbreviated as RPM), a non-belted cartridge with an angled shoulder and no freebore introduced in 2019. [12]
The 6.5 RPM is the first Weatherby cartridge that is beltless. Neither does it feature the double radius shoulder; rather the shoulder is 35.25 degrees that serves to offer positive headspace control and helps to increase burn efficiency and lowers shot-to-shot extreme spreads.
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. CARTRIDGE SPECS. Bullet Diameter: .264 (6.5mm) Common Reference: 6.5mm Caliber Max Case Length: 2.57”
3 sty 2023 · The 6.5 RPM betters the muzzle velocity of most of the 6.5-284 Norma loads by a couple of hundred fps, pushing a 140-grain Nosler AccuBond to 3075 fps and carrying 1,500 ft.-lbs. of energy out to 500 yards.
17 kwi 2020 · The 6.5 Weatherby RPM is based on the configuration of the 6.5-284 Norma (and its parent .284 Winchester), but the case is elongated in order to give a greater case capacity and to fit properly in a .30-06-length action. The RPM drives a 140-grain bullet at 3050 fps, giving a near-identical trajectory to the 6.5 PRC.
20 lis 2020 · 6.5 Weatherby Rebated Precision Magnum. Developed by Weatherby, the 6.5 Weatherby Rebated Precision Magnum (WBY RPM) was introduced with a maximum average pressure of 65,000 psi, with a 140-grain bullet traveling at a velocity of 3,075 fps.
