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    Ulrich Bretscher’s optimised black powder
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    74.63%

    Amount :
    grams

    13.43%

    Amount :
    grams

    11.94%

    Amount :
    grams
Suitable Substitute

Summary

Ulrich did a good job of examining the best “sweet spot” for BP power. This is richer in sulfur and lower in charcoal than most of the mixes I’ve seen before, the closest to this formula was “PGI optimized lift powder” which is within rounding in difference to this one and which was found using similar techniques. The Service Chem one while a little further off is also within rounding differences based the parts mix they used.

Author: Ulrich Bretscher

Source: http://www.passfire.com/