Sierra 284 Cal 7mm 120gr SPT

Sierra 284 Cal 7mm 120gr SPT

The Sierra 284 Cal 7mm 120gr SPT is a high-velocity soft-point Spitzer component bullet crafted for handloaders and hunters who demand flat trajectories, controlled expansion, and match-grade accuracy in .284‑inch 7mm rifles. Featuring a tapered Spitzer nose with an exposed lead core and a 120‑grain weight, this bullet excels in varmint control, small- to medium-game hunting, and long-range target shooting.

Engineered with a sleek Spitzer ogive and precision-formed soft-point tip, the 120gr SPT delivers rapid yet uniform expansion at velocities ranging from 2,900 to 3,400 fps. The Spitzer profile minimizes drag and improves ballistic efficiency, while the soft-point design initiates reliable terminal upset—producing wide wound channels with controlled penetration.

Manufactured to Sierra’s exacting component standards—120.0 grains weight, 0.284″ diameter, approximately 1.055″ overall length, and a sectional density near 0.230—the bullet features consistent jacket thickness, concentric meplat alignment, and tight concentricity. These attributes support repeatable pressure stability, reliable seating, and sub‑MOA accuracy in finely developed handloads.

Optimized for barrels with twist rates between 1:9 and 1:10, the Sierra 284 Cal 7mm 120gr SPT performs best at velocities between 2,900 and 3,200 fps. Shooters report excellent flat trajectories, solid wind resistance, and dependable terminal performance on varmints and thin-skinned game at ranges up to 500 yards.

As a component bullet, the Sierra 284 Cal 7mm 120gr SPT gives reloaders full control over powder charge, primer selection, and seating depth—enabling custom load development targeting trajectory, recoil balance, and terminal effect. It is not factory-loaded ammunition but a purpose-built soft-point Spitzer component designed for high-performance varmint and hunting applications in 7mm calibers.