#### Lowpuller

##### Well-Known Member

- Joined
- Nov 22, 2013

- Messages
- 2,230

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Please check my math, assumptions and conversion factors,

I only have a grains BP measure.

If I have done the math correctly there are 15.42 grains per gram, or roughly 15 grains per gram.

I have only been able to find 3f but it has work successfully for me in the past. If I remember correctly I add about 10%-20% to the value I get from on online BP calculator for 4f powder.

The calculator I used calculated 0.8 grams for both my drogue and main charge. I am raising this to 1.0 gram to compensate for 3f which I will measure out as 15 grains.

Ground test, ground test, ground test!

I only have a grains BP measure.

If I have done the math correctly there are 15.42 grains per gram, or roughly 15 grains per gram.

I have only been able to find 3f but it has work successfully for me in the past. If I remember correctly I add about 10%-20% to the value I get from on online BP calculator for 4f powder.

The calculator I used calculated 0.8 grams for both my drogue and main charge. I am raising this to 1.0 gram to compensate for 3f which I will measure out as 15 grains.

Ground test, ground test, ground test!

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