The Speer 1628 delivers consistent expansion and deep penetration for 7mm rifle cartridges, combining the proven performance of jacketed soft point construction with the ballistic efficiency of a boat tail design. This 145-grain bullet strikes the optimal balance between velocity retention and controlled expansion across hunting distances. Manufactured to Speer's exacting standards, each bullet maintains uniform weight distribution and concentricity for predictable flight characteristics.
What Makes This Different
The boat tail design reduces drag coefficient by approximately 15% compared to flat-base bullets, extending effective range and maintaining energy downrange. Speer's Hot-Cor process bonds the lead core to the copper jacket through electrochemical fusion, preventing core-jacket separation during expansion. This construction method ensures weight retention exceeds 85% while creating reliable mushrooming for clean, ethical harvests.Key Features
- 145-grain weight optimized for 7mm cartridges (.284 diameter)
- Hot-Cor bonded construction prevents jacket separation
- Boat tail design improves ballistic coefficient and downrange performance
- Jacketed soft point expands reliably at impact velocities from 1,800-2,800 fps
- Uniform jacket thickness ensures consistent expansion diameter
- Precision swaging maintains bullet concentricity within 0.0015 inches
- 100 bullets per box, 5 boxes per case (500 total bullets)
Technical Specs
- Caliber: 7mm (.284 inch diameter)
- Weight: 145 grains
- Construction: Jacketed soft point with Hot-Cor bonding
- Base: Boat tail design
- Sectional density: 0.257
- Recommended twist rate: 1:9.5 or faster
- Package: 100 bullets per box, 5 boxes per case
- Manufacturer: Speer (Vista Outdoor)
