IMR 8208 XBR Smokeless Gun Powder Every container of Alliant Smokeless Powder is backed by a century of manufacturing experience and the most exacting quality control procedures in the industry. Chemical composition, grain shape and size, and overall density are constantly checked and tested in a ballistics lab to ensure consistency.
imr 8208 xbr As a medium burn rate propellant, XBR is an excellent choice for cartridges such as 223 Remington/5.56mm, 308 Winchester/7.62mm NATO, 6mm PPC, and more. Shooters will find that IMR 8208 XBR provides the ultimate in speed and tack driving accuracy. Clearly, it is the “powder of choice” for competition and the “dream powder” of varmint hunters.
Offered by Alliant, Promo has the same burn speed as Red Dot, but is more dense, thus requiring a smaller bushing to obtain the same charge weight. It meters easily and charges consistently. Ideal for use in 12 gauge loads, but can also be used in some handgun loads.
Warnings from the Manufacturer:
- Do not exceed the loads displayed in the reloaders guide.
- Never mix any two powders regardless of type, brand, or source.
- Never substitute any smokeless powder for Black Powder or any Black Powder substitute.
WARNING: 
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