Hornady .321 170gr InterLock® Flat Point Reloading Bullet
Designed for handloaders using .32-20 Winchester and similar .321″ bore lever-gun cartridges, this flat point bullet is ideal for traditional component hunting.
The InterLock® ring, a raised band embedded in the one-piece lead core, mechanically locks the core and jacket together during expansion, ensuring consistent mass retention and deep, reliable penetration on game.
Inner groove serrations in the upper jacket section allow for controlled expansion, while the tapered jacket ensures predictable performance across a range of velocities, from low to high.
| Specification | Value |
|---|---|
| Bullet Diameter | .321″ |
| Weight | 170 grains |
| Shape | Flat Point |
| Design | InterLock® |
| Application | .32-20 Winchester and similar cartridges |
FAQ
What type of cartridges is this bullet suitable for?
This bullet is designed for .32-20 Winchester and similar .321″ bore lever-gun cartridges.
How does the InterLock® design improve performance?
The InterLock® ring mechanically locks the core and jacket together during expansion, maintaining mass and delivering consistent penetration.
Is this bullet suitable for use in tubular magazines?
Yes, the flat point profile is specifically designed for use in tubular magazines where pointed bullets could risk primer detonation.




Anne Thomson –
Used this bullet in a .32-20 Winchester for small game hunting. The flat point design worked well in the tubular magazine without any primer issues. Bullet expanded predictably and delivered solid penetration. Good consistency in performance across different loads.
Joe Hart –
Felt the InterLock® design provided better core retention than standard flat points. Shot a few deer and the bullet performed reliably. Expansion was controlled and the impact was deep. Slightly heavier than expected, but within acceptable range.
Jason Nash –
Loaded this bullet into my lever-action rifle for field use. No issues with feeding or expansion. The bullet held together well during impact and delivered consistent results. Good for traditional hunting setups.