Interbond;
1) Premium Polymer Tip
The sharp point improves ballistic performance, accuracy and initiation of expansion.

2) Bonded Core
The bonded design ensures that the bullet achieves controlled expansion with virtually no fragmentation and the core will never, ever, ever, ever separate from the jacket.

3) Expansion Control Ring
Controls expansion to form a large, flat mushroom and a wide wound channel over twice the bullet diameter.

4) Thicker, Tougher, Stiffer jacket
Necessary to retain weight and guarantees over twice the bullet diameter.

SST:
1) Premium Polymer Tip
The sharp point increases the SST’s™ ballistic coefficient, making it faster and flatter shooting. On impact, the tip also initiates controlled expansion at all velocities.

2) Secant Ogive, Boattail Spire Point Profile
It’s a simple fact: bullets that travel faster hit harder. The Hornady secant ogive, boattail spire point profile gives hunters the incredible speed and downrange energy they’re looking for.

3) The InterLock™ Ring
Ensures the core and jacket remain locked solid during expansion, so the SST™ retains the mass and energy needed for dramatic wound channels. Perfected in the famous Hornady InterLock hunting bullet.

Think of the Interbond as the same as Nosler Accubond. The SST would be like the Nosler Balistic Tip.