The Weatherby 25 WBY RPM 133gr Berger Elite Hunter load is a box of 20 rounds of 25 Weatherby RPM hunting ammunition built on premium brass (Weatherby part no. R25RPM133EH). The 25 Weatherby RPM follows the design philosophy of the 6.5 and 338 RPM cartridges: a rebated precision magnum case that fits a lighter, more compact rifle without giving up velocity or downrange capability. The Berger Elite Hunter uses a long hybrid ogive for a very high ballistic coefficient and a slightly thinner J4 Precision hunting jacket that lets the bullet penetrate two to three inches before expanding rapidly. Weatherby publishes a muzzle velocity of 3,000 fps and 2,657 ft-lbs of muzzle energy for this 133-grain load, still carrying 2,261 fps at 500 yards. Weatherby lists a 2026 production start for the cartridge.

Key Specifications

• The cartridge is 25 Weatherby RPM, a rebated precision magnum in 25 caliber built for the lightweight Mark V 6-Lug action.
• Bullet weight is 133 grains, the load weight Weatherby lists for this part number.
• The bullet is the Berger Elite Hunter, and the long hybrid ogive is how it earns a very high ballistic coefficient.
• The G1 ballistic coefficient is .613, a measure of how well the bullet resists drag as it flies.
• Muzzle velocity is 3,000 fps from Weatherby published ballistics, which sets the flatness of the trajectory.
• Muzzle energy is 2,657 ft-lbs, the starting point for the energy the bullet delivers downrange.
• Box quantity is 20 rounds, a standard count for sighting in and a hunting trip.

Frequently Asked Questions

What bullet does this 25 WBY RPM load use? It uses a 133-grain Berger Elite Hunter. The Berger Elite Hunter uses a long hybrid ogive for a very high ballistic coefficient and a slightly thinner J4 Precision hunting jacket that lets the bullet penetrate two to three inches before expanding rapidly.

What velocity and energy does this load publish? Weatherby lists 3,000 fps and 2,657 ft-lbs at the muzzle, falling to 2,689 fps and 2,135 ft-lbs at 200 yards and 2,261 fps and 1,509 ft-lbs at 500 yards.

What is the 25 WBY RPM cartridge? The 25 Weatherby RPM follows the design philosophy of the 6.5 and 338 RPM cartridges: a rebated precision magnum case that fits a lighter, more compact rifle without giving up velocity or downrange capability. Weatherby lists a 2026 production start for the cartridge.

Buy the Weatherby 25 WBY RPM 133gr Berger Elite Hunter Rifle Ammunition, 20-Round Box

Weatherby builds this 25 WBY RPM load around a 133-grain Berger Elite Hunter so the cartridge performs the way its design intends. Order it from Weatherby‘s selection of rifle ammunition through our Lubbock, Texas gun shop for fast, insured shipping.