Calculated B/C by painstaking hand calculations of the volume of the designs, then assuming the same plastic used in 0.2g BBs, to arrive at a mass.
Then multiply the weight in grams by 1.422, divide that total by the square root of the diameter, and multiply by form factor. I used the worst form factor possible to be conservative, that of a plain jane wadcutter (flat-nose lead, ff 0.8). Lead doesn't refer to the density so much as the surface friction.
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