Quote:
Kiwi Cop wrote:
The powder is used by a local ammunition manufacturer in their factory ammo and also sold to reloaders. They say it is a blend of two different but similar "well known powders which results in the benefits both are known for".
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Yikes!
Your first recourse is to the powder "blender" since they should be able to tell you the characteristics of their powder in that cartridge at that charge.
It may be this "local ammunition manufacturer" has the laboratory equipment as well as chemists and engineers with the requisite knowledge to safely and responsibly do what EVERY powder manufacturer explicitly says DON'T DO. And if they do, their chemists and engineers will be able to diagnose your problem straight away.
On the other hand, if the powder blender lacks these resources, it might be best to switch to a canister powder and published load data.