Hornady SST 6.5mm 129 Grain InterLock Polymer Tip Spitzer Boat Tail Bullets (Box of 100)

Hornady SST 6.5mm 129 grain rifle bullets are engineered for hunters who demand reliable expansion and terminal performance across a range of North American game. Built on Hornady's proven InterLock design, these polymer-tipped projectiles combine a sleek, aerodynamic profile with controlled expansion mechanics—ideal for everything from whitetail to elk and similar medium to large game animals. Whether you're hand-loading match rounds or building hunting ammunition, the SST delivers the ballistic efficiency and downrange energy that long-range and close-quarters shooting both demand.

The polymer tip serves dual purpose: it boosts ballistic coefficient for a flatter trajectory and more efficient energy retention downrange, while also initiating controlled expansion upon impact. This is where the InterLock ring becomes critical. By locking the bullet's core and jacket together during expansion, the SST preserves bullet mass and energy—resulting in a larger, more devastating wound channel than conventional designs. For reloaders seeking consistent, predictable terminal ballistics, this structural integrity is everything.

The secant ogive and boat tail profile are built for speed and stability. Faster-traveling bullets hit harder; Hornady's geometry maximizes velocity potential while maintaining precision. A cannelure band rings the shank, providing crimp consistency during reloading and working in concert with the InterLock to govern expansion. Each box contains 100 bullets, giving you plenty of brass for testing loads, sight-in rounds, or a full season's hunting.

These are serious reloading components for hunters and shooters who refuse compromise. Load them in 6.5 Creedmoor, 6.5x55 Swedish, or any other 6.5mm rifle cartridge and you'll get the accuracy and terminal performance you've earned.

Key Features

• Polymer tip increases ballistic coefficient and initiates controlled expansion
• InterLock ring locks core to jacket during expansion for maximum weight retention
• Secant ogive and boat tail profile optimize velocity and downrange energy
• Cannelure band ensures consistent crimping and works with InterLock to control expansion
• 100 bullets per box

Specifications

Frequently Asked Questions

What rifle calibers can I load these 6.5mm 129 grain bullets in?

These are 6.5mm (.264") diameter bullets designed for 6.5mm rifle cartridges such as 6.5 Creedmoor, 6.5x55 Swedish, and similar chamberings. Always verify bore diameter and consult published reloading data for your specific cartridge before loading.

How does the InterLock ring work during expansion?

The InterLock ring mechanically locks the bullet's lead core to its copper jacket during impact. This prevents core-jacket separation and ensures the bullet retains maximum mass while expanding, creating a larger wound channel and improving energy transfer to the target.

Are these bullets suitable for hunting?

Yes. The SST line is specifically designed for hunting applications. The controlled expansion, InterLock technology, and boat tail profile make them well-suited for North American game from antelope to moose, as well as similar-sized game.

What's included in a box of Hornady SST 6.5mm bullets?

Each box contains 100 loose bullets, ready for hand-loading into your preferred rifle cartridge.