Weatherby H303180IL Select 30-378WthbyMag 180gr Hornady Interlock 20 Per Box/10 Case

Long-range magnum shooting demands ammunition built to deliver consistent performance downrange. The Weatherby Select 30-378 WthbyMag with 180-grain Hornady Interlock rounds is engineered for shooters who need precision and reliability. Based in Sunnyvale, TacticCAL stocks factory ammunition for serious rifle hunters and long-distance competitors. Before purchasing any firearm or ammunition in California, review the current California firearm laws to ensure compliance with state regulations.

180-grain Hornady Interlock construction

Hornady Interlock bullets feature a bonded core design that controls expansion while maintaining velocity through heavy bone and muscle. The 180-grain weight in the 30-378 WthbyMag cartridge balances trajectory with energy retention at extended distances. This ammunition ships in brass cases, 20 rounds per box, with 10 boxes per case for bulk shooters. New to ammunition selection? Our California gun-buyer FAQ covers storage, purchase limits, and ammunition regulations specific to the state. Browse our gun store.

Frequently asked questions

What velocity does the 30-378 WthbyMag 180-grain load produce?

Weatherby Select loads in this chambering typically achieve velocities in the 2,900–3,000 fps range, though actual performance depends on barrel length and individual firearm variations.

Is the Hornady Interlock suitable for elk and large game hunting?

Yes. The 180-grain Interlock at magnum velocities provides controlled expansion and deep penetration needed for elk, moose, and other large game at moderate to long ranges.

How long is the California firearm waiting period?

California requires a 10-day waiting period from when DROS is submitted until you can take possession of the firearm. Find gun shop Santa Clara at TacticCAL.