Does anyone make a 1:8.5 twist 30 cal barrel?

TacosGigante

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Oct 29, 2013
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I ask because I am looking at some heavier copper solids for reloading but don't want to be wedded only to them. Based on the bison ballistics calculator a 8.5 twist would let me stabilize the range of bullets I am likely to use.
 
I ask because I am looking at some heavier copper solids for reloading but don't want to be wedded only to them. Based on the bison ballistics calculator a 8.5 twist would let me stabilize the range of bullets I am likely to use.
Outlier makes 1:8

 
Thanks all. Clearly I am a dummy, but I had no idea temperature and humidity played such a role in whether a bullet was stabilized. I knew they mattered, but going from summer in VA to winter in MT is the difference from stable to either spinning apart or keyholing.

Someone needs to create variable barrel twist tech where you can change the twist rate on the fly.