Barrel Twist Rates

Found this interesting website detailing barrel twist rates:

Optimal Twist Rate Selection | OEM Barrels | Vortakt

In the link above, you can find this calculator (among others):

JBM - Calculations - Stability (jbmballistics.com)

Also, a chart of some common caliber twist rates:

Vortakt-Caliber-List-2021.pdf

Enjoy!

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I have used the JBM Calculator several times in the past. Very helpful.

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When I had a barrel made, I told the smith I wanted a 1/10, when he took my data, and said no you dont. You want a 1/12.

Dang was he right

I just used the JBM and it told me my round is .666 :smiling_imp:

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