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Post by Timber Butte Outdoors on May 27, 2012 11:53:36 GMT -7
All of the powders sold under the Ramshot or Accurate brands meet or exceed the military specification for hot and cold stability. As with anything some powders are better than others. Single base powders such as Varget can be made more temperature stable than double based powders such as Accurate 2520 although there are trade offs to anything. While the nitroglycerin in a double based powder makes it less temperature stable it is the component that makes double based powders cleaner burning and allows them to attain higher velocities than their single based cousins.
In both the single base and double base lines of powders some powders have better temperature stability than others. Ramshot "TAC" is one of the most temperature stable double based powders available. It is this very reason that so much of it is being used for military applications in both Iraq and Afghanistan. Even under extreme temperatures Ramshot "TAC" will vary less than half of what the military will allow.
I hope this helps you out.
Good shooting!
Keith Anderson Western Powders Ballistic Lab
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