XXL Reloading
Speer 170gr Hot-Cor reloading bullet

.321 | 170gr | Speer Hot-Cor

Our reloading data for the .321 | 170gr | Speer Hot-Cor bullet covers a total of 28 suitable calibers and 571 load recipes

The Speer Hot-Cor bullet is a highly regarded projectile designed for optimal hunting performance, featuring a unique construction that sets it apart from typical bonded or hollow point designs. This bullet employs a traditional lead core that is heated and then poured into the jacket to eliminate impurities and voids typically associated with other manufacturing processes. The result is reliable expansion while maintaining excellent weight retention and consistent terminal ballistics. The Hot-Cor construction allows for controlled expansion with deep penetration, making it particularly suitable for hunting medium to large game. Typical calibers utilizing Hot-Cor bullets include .243 Winchester, .308 Winchester, and .30-06 Springfield, offering versatility for a range of hunting applications. For handloaders, these bullets provide the advantage of consistent quality and performance, reducing variability in loads. Whether pursuing deer, elk, or black bear, Speer Hot-Cor bullets provide reliable in-field performance with predictable results, making them a favored choice among seasoned hunters.

About this bullet

.321 | 170gr | Speer Hot-Cor is a bullet made by Speer. At 170 gr (11.0 g) and a diameter of 0.321'' (8.15 mm) it suits handloads where bullet weight and barrel length have to be matched carefully. Its G1 ballistic coefficient of 0.297 drives velocity retention and wind drift downrange — higher values mean a flatter trajectory at distance. We currently list 571 load recipes across 28 calibers for this bullet.

Most popular calibers for this bullet

CaliberLoad recipes
.325 WSM139
8 x 60121
8 x 64 S120
7.92 x 33 kurz71
8 x 57 R 36060

Load data for .321 | 170gr | Speer Hot-Cor bullet is available in the following calibers:

Safety notes

All load data is reference data only. Always start at the minimum charge and work up in small steps while watching for pressure signs. Never exceed the maximum charge published by the powder or bullet manufacturer.