Optimun /desired twist for a .224 bullet .666" long

[Wayne S]

Looking for thoughts and opinions on the optimum twist to shoot .666" long .225 bullets at between 1750 & 1850 FPS


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[Tom Myers]

Looking for thoughts and opinions on the optimum twist to shoot .666" long .225 bullets at between 1750 & 1850 FPS
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This should get you started.

Calculate Optimum Twist Rate (http://www.tmtpages.com/twistrate.htm)

[Wayne S]

Tom,
Thanks, JBM is another one I use http://www.jbmballistics.com/cgi-bin/jbmstab-5.1.cgi
When talking to gun smiths & T/C custom barrel makers , say "cast bullets" and you can image their eyes glazing over and rolling back in their head.

[Larry Gibson]

The optimum will be the slowest twist that just stabilizes the cast bullet across the expect range of use...

Larry Gibson

[swheeler]

Looking for thoughts and opinions on the optimum twist to shoot .666" long .225 bullets at between 1750 & 1850 FPS


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666 that's going to be a devil to get to shoot! I'd use a 1:11 twist for your velocity

[Wayne S]

The only trouble is no one makes a 1-11 as a standard item, plus while one program says a 1-12 is in the middle of the stability range, the other say's it would take 2000+ fps to stabilize the .666 " bullet.