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68 Cal Projectile (not a Tampon) — image 1
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68 Cal Projectile (not a Tampon)

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Had a 40mm shell chambered in .68 lying around and thought "why not ?"

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Model information

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Creative Commons — Attribution — Noncommercial

Conical inside to make it front heavy and a 33.5 degree twist to support it in flight.

Outer-Ø 17.2mm might need a little adjustment depending on your printer settings.

Weight can be adjusted by changing the infill.

25% infill with 4 outer walls equals 3.5g or 54 grains total

Has a great range and appears to fly without tumbling. 

 

More versions in the works.

Dont aim at anything/ anyone.

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