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Message: <blockquote data-quote="Waco" data-source="post: 4354530" data-attributes="member: 47799">I have an opened 1 lb container of IMR 4451.  This powder has not had Tubb Dust added to it.  I estimate it to be 10 oz of powder left in the jug.  I can be reached at four zero five six three zero seven three five eight, calls only.  $10.00 Any questions let me know.  Thanks IMR Enduron 4451 is a versatile, match-grade propellant with a mid-range burn speed in the Enduron line. It is an extruded powder and is perfect for cartridges like 270 Winchester, 30-06 or 300 Winchester Short Magnum, among others.  The main features of the Enduron series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density and being environmentally friendly.  This propellant performs comparably to Hodgdon H4350 but charge weights are materially different.  Made in Canada.</blockquote>