IMR 5010 Military Surplus Gunpowder For Sale IMR 5010 Military Surplus Powder is a premium, slow-burning smokeless powder initially developed for military use in the powerful .50 BMG cartridge. It shares similar burn characteristics with WC860 powder and is often interchangeable in precision long-range loads, especially in cartridges with longer barrels like the 7mm STW. This surplus powder is prized for delivering consistent accuracy with moderate velocities, making it an excellent choice for match shooting and hunting applications where precision is paramount. Due to its slow burn rate, IMR 5010 requires compatible primers such as FED215 or FED215GM to achieve optimal ignition and performance. Reloaders should approach load development cautiously and start low, working up to optimum charges for safety and accuracy. As a surplus powder, IMR 5010 offers an economical yet high-quality option for shooters demanding proven military powder performance in rifle cartridges that require slow-burning profiles. Proper storage and handling recommendations should be followed to maintain its quality. IMR 5010 Powder stands out for balancing military-grade reliability with competitive shooting performance, making it a versatile and sought-after powder in the surplus market. Specifications Product Information Quantity  1 – 8 Pounds Delivery Information Shipping Weight 1.000 – 8.000 Pounds DOT-Regulated Yes HazMat Product Yes   WARNING: This product can expose you to N-Nitrosodiphenylamine, which is known to the State of California to cause cancer, and Di-n-butyl phthalate (DBP) or Lead, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to – www.P65Warnings.ca.gov.