Range Report Finding gyroscopic stability data

[Knight6]

I m trying to find gyroscopic stability data for 3 x bullets:

Sierra match king .308 168gr
Sierra match king .308 175gr
Sierra match king 6.5CM 140gr

I know I can buy Sierra's bullet software but that seems a bit silly for just 3 bullets. Anyone know where I might find this data opensource?

Thanks in advance for any help.

 

[Gohring65]

Couldn’t you just enter it in the Berger twist calculator?
Or maybe Hornady 4dof?

 

[Knight6]

Couldn’t you just enter it in the Berger twist calculator?
Or maybe Hornady 4dof?

Will look it up and see. Thanks for the idea. Didn’t think of looking there. DOH!

 

[Gohring65]

Good luck
Hornady has several bullets listed for sierra
If you know the length, the Berger twist calculator will tell you if you enter your ballistic data, temp and altitude.

 

[Knight6]

Found what I needed through the Berger twist calculator and pulling data from Sierra and Federal. Thanks for the advice!!