IMR 4955 Smokeless Powder with ENDURON Technology
Elevate your reloading experience with IMR 4955 smokeless powder, engineered with revolutionary ENDURON technology. This premium propellant is specifically designed for rifle cartridges, offering shooters and reloaders unmatched consistency, temperature stability, and cleaner burning characteristics. Whether you’re preparing ammunition for target shooting, hunting, or competitive events, IMR 4955 provides the reliable performance that serious reloaders demand.

Why Choose IMR 4955 Powder?
IMR 4955 stands out in the crowded smokeless powder market thanks to its proprietary ENDURON formulation. This technology represents a significant advancement in propellant chemistry, resulting in several key benefits:
- Enhanced Temperature Stability: Maintains consistent burn rates across varying environmental conditions, ensuring reliable performance whether you’re shooting in summer heat or winter cold.
- Reduced Fouling: The cleaner-burning formula minimizes barrel fouling, extending cleaning intervals and maintaining accuracy over extended shooting sessions.
- Consistent Lot-to-Lot Performance: IMR’s rigorous quality control ensures each batch of 4955 powder delivers identical ballistic properties, giving reloaders confidence in their ammunition.
- Versatile Applications: While optimized for rifle cartridges, this powder works well across multiple calibers when used with proper load data and safety precautions.
Technical Specifications and Loading Data
IMR 4955 is a medium-burning rate powder ideal for a wide range of rifle applications. Always consult current reloading manuals for specific load data, but typical applications include popular cartridges like .308 Winchester, .30-06 Springfield, and similar medium-capacity rifle rounds. The powder’s consistent granulation ensures precise metering through powder measures, while its stability provides predictable pressure curves for safe reloading practices.
Why Buy from The Guns Warehouse?
At The Guns Warehouse, we understand that reloaders demand quality products from trusted sources. Here’s why you should choose us for your reloading supplies:
- Expertise You Can Trust: Our team includes experienced reloaders who understand the nuances of different powders and their applications.
- Genuine Products Guaranteed: We source directly from authorized distributors, ensuring you receive authentic IMR products with proper lot coding and freshness.
- Competitive Pricing: We work hard to provide fair prices on quality reloading components without compromising on service.
- Secure Shipping: All powder shipments comply with federal regulations and are handled with the utmost care for safe delivery to your door.
For all your reloading needs, visit our online store to explore our complete selection of powders, primers, brass, and reloading accessories.
Safe Reloading Practices
Always follow established reloading safety protocols when working with IMR 4955 or any smokeless powder:
- Start with minimum recommended loads and work up gradually
- Use current, manufacturer-approved load data
- Store powder in a cool, dry place away from heat sources
- Never mix different lots of powder in the same loading session
- Keep detailed records of your loads and their performance
With proper handling and loading techniques, IMR 4955 with ENDURON technology will provide exceptional results for your rifle reloading projects.
| Powder Type | Smokeless Rifle Powder |
| Technology | ENDURON Formulation |
| Container Size | 1 lb (453.6 grams) |
| Burn Rate | Medium |
| Primary Applications | Rifle Cartridges |
| Temperature Stability | Enhanced |
| Fouling Characteristics | Reduced |

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