Looking to build a 408CT after I finish up my SBR. What is the preferred barrel twist? Single fed BAT EX action, marriage ulr chassis, likely a Kriger barrel, acc sol bipod.
408CT twist rate.
- Thread starter Zealous Azure Mouse
- Start date
Figure out what bullet you’re going to shoot, look at manufacturer minimum twist and go with that
There are downsides to too much twist. Dont over do it and don’t go tight for a heavy and then choose a light bullet
And whatever velocity you think you’re gonna get (ie what you WANT), subtract 100 fps and make sure you will be satisfied with that, cuz guys post only the high numbers and you might fall on the other end of the disteibution
What brass?
There are downsides to too much twist. Dont over do it and don’t go tight for a heavy and then choose a light bullet
And whatever velocity you think you’re gonna get (ie what you WANT), subtract 100 fps and make sure you will be satisfied with that, cuz guys post only the high numbers and you might fall on the other end of the disteibution
What brass?
Berger has a Twist Rate Stability Calculator at https://bergerbullets.com/twist-rate-calculator/
JBM also has a stability calculator to back into the twist you need - https://www.jbmballistics.com/cgi-bin/jbmstab-5.1.cgi - read the "Explanation of terms".
JBM also has a stability calculator to back into the twist you need - https://www.jbmballistics.com/cgi-bin/jbmstab-5.1.cgi - read the "Explanation of terms".
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