The Weatherby Select Plus .338 Weatherby RPM 185gr Barnes TTSX load is a box of 20 rounds (Weatherby part no. B338185TTSX) loaded in premium brass. The .338 Weatherby RPM is a rebated precision magnum based on the 6.5 RPM necked up to .338, designed for magnum performance in a lightweight rifle. The projectile is the Barnes TTSX, a 100-percent copper bullet with a polymer tip that boosts ballistic coefficient for long-range work and provides fast expansion. Weatherby publishes 3100 fps and 3947 ft-lbs at the muzzle for this load, with 2460 fps remaining at 300 yards.

Key Specifications

• The chambering is .338 Weatherby RPM, matching rifles marked for that cartridge.
• Bullet weight is 185 grains, the weight Weatherby lists for this load.
• The bullet is the Barnes TTSX, a 100-percent copper design with a polymer tip.
• Expansion produces four cutting petals that double the bullet diameter, which creates the wound channel Weatherby describes.
• Weatherby publishes a muzzle velocity of 3100 fps for this load, the starting point for its downrange numbers.
• Published muzzle energy is 3947 ft-lbs, a measure of the energy the bullet carries as it leaves the barrel.
• Velocity at 300 yards is listed at 2460 fps, which shows how much speed the bullet holds downrange.
• Bullet diameter is .338 (8.6mm), the size Weatherby lists for this cartridge.
• The load is lead-free according to Weatherby’s listing, which matters where lead ammunition is restricted.
• Each box holds 20 rounds, a practical count for sighting in and a season of hunting.

Frequently Asked Questions

How many rounds come in this box of .338 Weatherby RPM ammunition? The box holds 20 rounds of .338 Weatherby RPM 185gr Barnes TTSX ammunition.

What is the Barnes TTSX bullet made of? Weatherby describes the TTSX as a 100-percent copper bullet with a polymer tip that boosts ballistic coefficient for long-range ballistics and provides fast expansion. Four cutting petals double the bullet diameter on expansion.

How fast is this .338 Weatherby RPM 185gr load? Weatherby lists a muzzle velocity of 3100 fps and 3947 ft-lbs of muzzle energy, dropping to 2460 fps at 300 yards.

Buy the Weatherby Select Plus .338 Weatherby RPM 185gr Barnes TTSX Rifle Ammunition

This .338 Weatherby RPM load gives you a Weatherby factory option built around a Barnes TTSX bullet and premium brass. Order it with the rest of our rifle ammunition from our Lubbock, Texas gun shop for fast, insured shipping.