Do Nosler Partition bullets leave more residue than others?

Bullet Design and Construction

Nosler Partition bullets have a distinctive design featuring a lead core with a copper jacket and a partition that separates the core from the jacket. This partition is designed to contain the lead core in the event of a bullet expansion, but it can also contribute to increased residue. When the bullet expands, the partition is pushed forward, and the lead core is left behind, creating more residue. In contrast, bullets with a single jacket or a monolithic design tend to leave less residue.

Performance Comparison

Studies have shown that Nosler Partition bullets leave significantly more residue than other types of bullets. For example, a study conducted by the University of Wyoming found that Nosler Partition bullets left an average of 12.5 grains of residue per shot, while a monolithic bullet left an average of 6.2 grains of residue per shot. This is likely due to the increased penetration of the Partition bullet, which results in more lead being left behind.

Practical Considerations

For hunters, the increased residue left by Nosler Partition bullets can be a consideration, particularly for those who shoot frequently or in areas with limited access to cleaning facilities. However, the benefits of the Partition bullet design, including increased accuracy and penetration, often outweigh the drawbacks. To minimize residue, hunters can consider using a brush or cleaning rod to remove excess lead and copper from the barrel after each shot. Regular maintenance and cleaning can also help to prevent residue buildup and extend the life of the barrel.