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Delay mix


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Could someone let me know of a good delay mix composition. New at the game.
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-Potassium Nitrate: 45%

-Charcoal: 50% (not sure of type, I'm guessing airfloat but I don't have much experience with this)

-Dextrin: 5%

I got this off of Pyroguide, It came from a Skylighter tutorial.

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Any glitter comp will work, in fact just about any star comp. Black powder with an aditional percentage of baking soda will also work. More baking soda for a slower burn.
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I need a good rocket delay that would burn at 6-8 sec per inch

BP +5-10% sodium bicarb. It doesn't need to me milled in, just screened into meal.

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Thank you all.
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