Home / IMR / 4350 8lb – IMR Powder 4350 8lb – IMR Powder$250.00 IMR #4350 (8 LBS.) IMR 4350 is a medium- to slow-burn rate propellant and is the number one choice for the new short magnums, both Remington and Winchester versions. For magnums with light- to medium-bullet weights, IMR 4350 is the best choice. 8lb IMR 4350 Powder 4350 8lb - IMR Powder quantity Add to cart Category: IMR Product ID: 2325 Related products IMR Powder – 7977 1lb $45.00 Add to cart IMR Powder – 4831 1lb $40.00 Add to cart IMR Powder – 4227 1lb $45.00 Add to cart IMR Powder – 8133 1lb $40.00 Add to cart