Posted By: papa45
IMR 4451 Enduron Powder - 06/22/15 10:38 PM
I bought a pound to test, but found what appears to be an error on the Hodgdon website load data. Loads listed for .243 Win seem to be mixed up. Specifically, max loads for some of the heavier bullets are shown as:
90 gr Speer Soft Point, 40.5 gr 4451
95 gr Nosler Partition, 41.8 gr 4451
100 gr Speer Soft Point Boat Tail,42.7 gr 4451
...all at essentially the same pressure. It doesn't make sense to me that you can load heavier bullets with more powder and maintain the same pressure. Starting loads listed follow a similar pattern. I recognize that the bullets listed have different characteristics, but that can't explain what's shown. I called Mike at Hodgdon, who checked back to their actual test data records and he said these numbers are correct. I'm stumped. Does anyone have any experience with this powder? Can anyone offer an explanation?
90 gr Speer Soft Point, 40.5 gr 4451
95 gr Nosler Partition, 41.8 gr 4451
100 gr Speer Soft Point Boat Tail,42.7 gr 4451
...all at essentially the same pressure. It doesn't make sense to me that you can load heavier bullets with more powder and maintain the same pressure. Starting loads listed follow a similar pattern. I recognize that the bullets listed have different characteristics, but that can't explain what's shown. I called Mike at Hodgdon, who checked back to their actual test data records and he said these numbers are correct. I'm stumped. Does anyone have any experience with this powder? Can anyone offer an explanation?