Weatherby‘s Select Plus line in 30-378 Weatherby Magnum (brand part no. F303180SCO) loads a 180-grain Swift Scirocco bullet at a listed 3,500 feet per second, running one of the most powerful .30-caliber cartridges ever put into production. Roy Weatherby originally developed the 30-378 as a wildcat in 1959 at the request of the United States Army, necking the massive .378 Weatherby case down to .30 caliber and packing it with enough powder to be billed as the fastest cartridge of its kind in the world. The Swift Scirocco is a bonded, polymer-tipped boat tail bullet built to survive that velocity, expanding reliably while holding together for deep penetration rather than fragmenting under the extreme impact speed. For 30-378 Weatherby Magnum shooters who want a factory bullet built for the cartridge’s extremes, this rifle ammunition delivers it.

Key Specifications

• The chambering is 30-378 Weatherby Magnum, originally a 1959 wildcat developed for the United States Army.
• The case is built by necking the .378 Weatherby case down to .30 caliber, packed with an enormous powder charge.
• The cartridge was originally billed as among the fastest of its kind in the world.
• The bullet weighs 180 grains, matched to the cartridge’s extreme-velocity profile.
• The bullet is a Swift Scirocco, a bonded, polymer-tipped boat tail design.
• Muzzle velocity is listed at 3,500 fps.
• Shipping weight per box runs 1.9 pounds, useful for hunters ordering multiple boxes.

Frequently Asked Questions

What is the history behind 30-378 Weatherby Magnum? Roy Weatherby developed it as a wildcat in 1959 at the request of the United States Army, necking the .378 Weatherby case down to .30 caliber.

Can a bullet survive this cartridge’s velocity? The Swift Scirocco’s bonded core is specifically built to hold together and expand reliably at extreme impact speeds rather than fragmenting.

How fast does this load shoot? Weatherby lists muzzle velocity at 3,500 fps for the 180-grain bullet.

Buy Weatherby Select Plus 30-378 Weatherby Magnum 180gr Scirocco

Few cartridges carry a military-request origin story like the 30-378, and this Scirocco loading gives it a bullet built to match that extreme performance. Order from our Lubbock, Texas gun shop and it ships fast to your door.