IMR 7828 Powder For Sale The big magnum powder is IMR 7828 Powder For Sale In Stock Now. Large over-bored magnums like the 300 Remington Ultra Magnum, 30-378 Weatherby Magnum, and 7mm Remington Ultra Magnum benefit from this slow burner’s magnum performance. Most magnum enthusiasts like this powder. Important Information: It is imperative that you do not go over the loads that are specified in the reloaders handbook. Never, ever combine any powders, regardless of the kind, brand, or origin of any powder. Never attempt to use smokeless powder as a replacement for black powder or any other kind of black powder alternative. Key Features and Benefits: IMR 7828 Powder For Sale always delivers power at the magnum level Slow-burning The ideal powder for use in rifles with over-bored magnum bores Specifications Product Information Quantity 1 Pound – 8 Pounds Delivery Information Shipping Weight 1.140 Pounds – 8.400 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.