IMR Enduron 4166 is a versatile, match-grade propellant characterized by the fastest burn rate within the Enduron series. This extruded powder offers an optimal burn speed suitable for cartridges such as the .308 Win, 7.62x51mm NATO, .22-250 Remington and .257 Roberts, among others.

The Enduron series boasts advanced features including a copper fouling eliminator, temperature change insensitivity, optimal loading density and eco-friendly design
This propellant exhibits performance characteristics akin to Hodgdon Varget, however, the charge weights demonstrate significant material variance
Manufactured and assembled in compliance with Canadian industry standards and regulations

Report incorrect product description

Reviews

Q & A

Retail Stock

Compliance

Shipping Restrictions

It is the customer’s responsibility for understanding state laws regarding all purchases made. For a comprehensive list of all Shipping Restrictions, please refer to our Shipping Restrictions By State Page found Here.

All NFA Rules Apply

These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.

WARNING: Handling firearms or firearms parts can expose you to lead and other petroleum products known to the State of California to cause cancer, birth defects, or other reproductive harm. Wash hands thoroughly after handling. For more information go to www.p65warnings.ca.gov (CA Health and Safety Code Section 25249.6).